TY  - JOUR
AU  - Anđelković, Ivan
AU  - Nešić, Jelena
AU  - Stanković, Dalibor
AU  - Manojlović, Dragan D.
AU  - Pavlović, Miodrag B.
AU  - Jovalekic, C.
AU  - Roglić, Goran
PY  - 2014
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1513
AB  - Efficiency of Fe2O3 and mixture of Fe2O3 and MnO2 nanoparticles synthesised by mechanical-chemical reaction for inorganic As(III) and As(V) sorption was examined. Sorbents (Fe2O3 and mixture Fe2O3:MnO2 = 3:1) synthesised by mechanical-chemical treatment in planetary ball mile with different milling times were tested by batch experiments. Experimental data were fitted both to Freundlich and Langmuir adsorption models. Efficiency of sorption was in good correlation with the time of milling in case of pure oxide. There were small differences in sorption between As(III) and As(V). In the case of mixture of oxides results were different. The best results were obtained by 30 min of milling. With prolonged milling, the sorption decreased to 3 h and after that increased again. These results were explained by phase transition. Sorption kinetics, influence of pH and the presence of other anions were examined for mixture of oxides with highest sorption capacity. The bioavailability of sorbed arsen was tested using modified Tessier procedure.
PB  - Springer, New York
T2  - Clean Technologies and Environmental Policy
T1  - Investigation of sorbents synthesised by mechanical-chemical reaction for sorption of As(III) and As(V) from aqueous medium
VL  - 16
IS  - 2
SP  - 395
EP  - 403
DO  - 10.1007/s10098-013-0635-1
ER  - 

@article{
author = "Anđelković, Ivan and Nešić, Jelena and Stanković, Dalibor and Manojlović, Dragan D. and Pavlović, Miodrag B. and Jovalekic, C. and Roglić, Goran",
year = "2014",
abstract = "Efficiency of Fe2O3 and mixture of Fe2O3 and MnO2 nanoparticles synthesised by mechanical-chemical reaction for inorganic As(III) and As(V) sorption was examined. Sorbents (Fe2O3 and mixture Fe2O3:MnO2 = 3:1) synthesised by mechanical-chemical treatment in planetary ball mile with different milling times were tested by batch experiments. Experimental data were fitted both to Freundlich and Langmuir adsorption models. Efficiency of sorption was in good correlation with the time of milling in case of pure oxide. There were small differences in sorption between As(III) and As(V). In the case of mixture of oxides results were different. The best results were obtained by 30 min of milling. With prolonged milling, the sorption decreased to 3 h and after that increased again. These results were explained by phase transition. Sorption kinetics, influence of pH and the presence of other anions were examined for mixture of oxides with highest sorption capacity. The bioavailability of sorbed arsen was tested using modified Tessier procedure.",
publisher = "Springer, New York",
journal = "Clean Technologies and Environmental Policy",
title = "Investigation of sorbents synthesised by mechanical-chemical reaction for sorption of As(III) and As(V) from aqueous medium",
volume = "16",
number = "2",
pages = "395-403",
doi = "10.1007/s10098-013-0635-1"
}

Anđelković, I., Nešić, J., Stanković, D., Manojlović, D. D., Pavlović, M. B., Jovalekic, C.,& Roglić, G.. (2014). Investigation of sorbents synthesised by mechanical-chemical reaction for sorption of As(III) and As(V) from aqueous medium. in Clean Technologies and Environmental Policy
Springer, New York., 16(2), 395-403.
https://doi.org/10.1007/s10098-013-0635-1

Anđelković I, Nešić J, Stanković D, Manojlović DD, Pavlović MB, Jovalekic C, Roglić G. Investigation of sorbents synthesised by mechanical-chemical reaction for sorption of As(III) and As(V) from aqueous medium. in Clean Technologies and Environmental Policy. 2014;16(2):395-403.
doi:10.1007/s10098-013-0635-1 .

Anđelković, Ivan, Nešić, Jelena, Stanković, Dalibor, Manojlović, Dragan D., Pavlović, Miodrag B., Jovalekic, C., Roglić, Goran, "Investigation of sorbents synthesised by mechanical-chemical reaction for sorption of As(III) and As(V) from aqueous medium" in Clean Technologies and Environmental Policy, 16, no. 2 (2014):395-403,
https://doi.org/10.1007/s10098-013-0635-1 . .

TY  - JOUR
AU  - Jovalekic, Cedomir
AU  - Nikolić, Aleksandar S.
AU  - Gruden-Pavlović, Maja
AU  - Pavlović, Miodrag B.
PY  - 2012
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1291
AB  - The interest in finding new methods for the preparation of nickel ferrite (NiFe2O4) and nickel-zinc ferrite (NixZn1-xFe2O4) powders has recently increased, because the physical and chemical properties of these soft magnetic materials depend strongly on the preparation conditions. In this study, powder samples of ferrites were obtained by: 1) a classic sintering procedure (NixZn1-xFe2O4, x = 0.9) and 2) planetary mill synthesis (both NiFe2O4 and the NixZn1-xFe2O4). The mechano-chemical reaction leading to the formation of the spinel phase of NixZn1-xFe2O4 (x = 1 or 0.9) was monitored by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD) analysis. The values of the real and imaginary parts of the permittivity and permeability were measured for the obtained nickel and nickel-zinc ferrite samples in the 7-12 GHz frequency range. Based on the obtained results, the electromagnetic radiation (EMR) absorption coefficients were calculated for all three types of sample. It was concluded that the method of preparation and the final particle size influence the EMR absorption coefficient of nickel and nickel-zinc ferrites.
AB  - U novije vreme povećan je interes za pronalaženje novih metoda za sintezu nikal-ferita (NiFe2O4) i nikal-cink-feritnih (NixZn1-xFe2O4) prahova, zbog činjenice da fizička i hemijska svojstva ovih 'mekih' magnetnih materijala u mnogome zavise od uslova pripreme. Dobijeni feritni prahovi, opisani u ovom radu, sintetisani su: 1) klasičnom procedurom sinterovanja (NixZn1-xFe2O4, x = 0,9 ili 2) sintezom u planetarnom mlinu (NiFe2O4 i NixZn1-xFe2O4). Prosečna veličina čestica dobijenih prvom metodom iznosi 3-5 μm, dok druga metoda daje čestice veličine 10-12 nm. Karakterizacija uzoraka praćena je skenirajućom elektronskom mikroskopijom (SEM), transmisionom elektronskom mikroskopijom (TEM), kao i difrakcionom analizom X-zracima (XRD). Realni i imaginarni delovi koeficijenata permitivnosti i permeabilnosti su mereni na dobijenim uzorcima nikal i nikal-cink-ferita u frekventnom opsegu 7-12 GHz. Na osnovu dobijenih rezultata, izračunati su EMR apsorpcioni koeficijenti za sve dobijene uzorke. Zaključeno je da je način pripreme, kao i dobijena veličina čestica, utiču na EMR apsorpcione koeficijente nikal i nikal-cink-ferita.
PB  - Serbian Chemical Soc, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - Mechano-chemical synthesis of stoichiometric nickel and nickel-zinc ferrite powders with Nicolson-Ross analysis of the absorption coefficients
T1  - Mehanohemijska sinteza nikal i nikal-cink feritnih prahova sa Nicolson-Ross analizom absorpcionih koeficijenata
VL  - 77
IS  - 4
SP  - 497
EP  - 505
DO  - 10.2298/JSC110302186J
ER  - 

@article{
author = "Jovalekic, Cedomir and Nikolić, Aleksandar S. and Gruden-Pavlović, Maja and Pavlović, Miodrag B.",
year = "2012",
abstract = "The interest in finding new methods for the preparation of nickel ferrite (NiFe2O4) and nickel-zinc ferrite (NixZn1-xFe2O4) powders has recently increased, because the physical and chemical properties of these soft magnetic materials depend strongly on the preparation conditions. In this study, powder samples of ferrites were obtained by: 1) a classic sintering procedure (NixZn1-xFe2O4, x = 0.9) and 2) planetary mill synthesis (both NiFe2O4 and the NixZn1-xFe2O4). The mechano-chemical reaction leading to the formation of the spinel phase of NixZn1-xFe2O4 (x = 1 or 0.9) was monitored by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD) analysis. The values of the real and imaginary parts of the permittivity and permeability were measured for the obtained nickel and nickel-zinc ferrite samples in the 7-12 GHz frequency range. Based on the obtained results, the electromagnetic radiation (EMR) absorption coefficients were calculated for all three types of sample. It was concluded that the method of preparation and the final particle size influence the EMR absorption coefficient of nickel and nickel-zinc ferrites., U novije vreme povećan je interes za pronalaženje novih metoda za sintezu nikal-ferita (NiFe2O4) i nikal-cink-feritnih (NixZn1-xFe2O4) prahova, zbog činjenice da fizička i hemijska svojstva ovih 'mekih' magnetnih materijala u mnogome zavise od uslova pripreme. Dobijeni feritni prahovi, opisani u ovom radu, sintetisani su: 1) klasičnom procedurom sinterovanja (NixZn1-xFe2O4, x = 0,9 ili 2) sintezom u planetarnom mlinu (NiFe2O4 i NixZn1-xFe2O4). Prosečna veličina čestica dobijenih prvom metodom iznosi 3-5 μm, dok druga metoda daje čestice veličine 10-12 nm. Karakterizacija uzoraka praćena je skenirajućom elektronskom mikroskopijom (SEM), transmisionom elektronskom mikroskopijom (TEM), kao i difrakcionom analizom X-zracima (XRD). Realni i imaginarni delovi koeficijenata permitivnosti i permeabilnosti su mereni na dobijenim uzorcima nikal i nikal-cink-ferita u frekventnom opsegu 7-12 GHz. Na osnovu dobijenih rezultata, izračunati su EMR apsorpcioni koeficijenti za sve dobijene uzorke. Zaključeno je da je način pripreme, kao i dobijena veličina čestica, utiču na EMR apsorpcione koeficijente nikal i nikal-cink-ferita.",
publisher = "Serbian Chemical Soc, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "Mechano-chemical synthesis of stoichiometric nickel and nickel-zinc ferrite powders with Nicolson-Ross analysis of the absorption coefficients, Mehanohemijska sinteza nikal i nikal-cink feritnih prahova sa Nicolson-Ross analizom absorpcionih koeficijenata",
volume = "77",
number = "4",
pages = "497-505",
doi = "10.2298/JSC110302186J"
}

Jovalekic, C., Nikolić, A. S., Gruden-Pavlović, M.,& Pavlović, M. B.. (2012). Mechano-chemical synthesis of stoichiometric nickel and nickel-zinc ferrite powders with Nicolson-Ross analysis of the absorption coefficients. in Journal of the Serbian Chemical Society
Serbian Chemical Soc, Belgrade., 77(4), 497-505.
https://doi.org/10.2298/JSC110302186J

Jovalekic C, Nikolić AS, Gruden-Pavlović M, Pavlović MB. Mechano-chemical synthesis of stoichiometric nickel and nickel-zinc ferrite powders with Nicolson-Ross analysis of the absorption coefficients. in Journal of the Serbian Chemical Society. 2012;77(4):497-505.
doi:10.2298/JSC110302186J .

Jovalekic, Cedomir, Nikolić, Aleksandar S., Gruden-Pavlović, Maja, Pavlović, Miodrag B., "Mechano-chemical synthesis of stoichiometric nickel and nickel-zinc ferrite powders with Nicolson-Ross analysis of the absorption coefficients" in Journal of the Serbian Chemical Society, 77, no. 4 (2012):497-505,
https://doi.org/10.2298/JSC110302186J . .

TY  - JOUR
AU  - Antić, Bratislav
AU  - Kremenović, Aleksandar
AU  - Jovic, N.
AU  - Pavlović, Miodrag B.
AU  - Jovalekic, C.
AU  - Nikolić, Aleksandar S.
AU  - Goya, G. F.
AU  - Weidenthaler, C.
PY  - 2012
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1285
AB  - We present a study of the structural and magnetic properties of (Mn,Fe)(3-delta)O-4 nanoparticles synthesized by soft mechanochemistry using Mn(OH)(2) x 2 H2O and Fe(OH)(3) powders as starting compounds. The resulting nanoparticles with a composition of the (Mn,Fe)(3-delta)O-4 type are found to have a core/shell structure with different Mn/Fe ratios in the core and at the surface. XPS analysis points to valences of +2, +3, and +4 for Mn and +3 for Fe at the particle surface. Combined results of XRPD, Mossbauer spectroscopy, and EDX analysis suggest that there is a deviation from stoichiometry in the nanoparticle core compared to the shell, accompanied by creation of cation polyvalence and vacancies. The value of saturation magnetization, M-S, of 73.5 emu/g at room temperature, is among the highest reported so far among nanocrystalline ferrite systems of similar composition. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3700228]
PB  - Amer Inst Physics, Melville
T2  - Journal of Applied Physics
T1  - Magnetization enhancement and cation valences in nonstoichiometric (Mn,Fe)(3-delta)O-4 nanoparticles
VL  - 111
IS  - 7
DO  - 10.1063/1.3700228
ER  - 

@article{
author = "Antić, Bratislav and Kremenović, Aleksandar and Jovic, N. and Pavlović, Miodrag B. and Jovalekic, C. and Nikolić, Aleksandar S. and Goya, G. F. and Weidenthaler, C.",
year = "2012",
abstract = "We present a study of the structural and magnetic properties of (Mn,Fe)(3-delta)O-4 nanoparticles synthesized by soft mechanochemistry using Mn(OH)(2) x 2 H2O and Fe(OH)(3) powders as starting compounds. The resulting nanoparticles with a composition of the (Mn,Fe)(3-delta)O-4 type are found to have a core/shell structure with different Mn/Fe ratios in the core and at the surface. XPS analysis points to valences of +2, +3, and +4 for Mn and +3 for Fe at the particle surface. Combined results of XRPD, Mossbauer spectroscopy, and EDX analysis suggest that there is a deviation from stoichiometry in the nanoparticle core compared to the shell, accompanied by creation of cation polyvalence and vacancies. The value of saturation magnetization, M-S, of 73.5 emu/g at room temperature, is among the highest reported so far among nanocrystalline ferrite systems of similar composition. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3700228]",
publisher = "Amer Inst Physics, Melville",
journal = "Journal of Applied Physics",
title = "Magnetization enhancement and cation valences in nonstoichiometric (Mn,Fe)(3-delta)O-4 nanoparticles",
volume = "111",
number = "7",
doi = "10.1063/1.3700228"
}

Antić, B., Kremenović, A., Jovic, N., Pavlović, M. B., Jovalekic, C., Nikolić, A. S., Goya, G. F.,& Weidenthaler, C.. (2012). Magnetization enhancement and cation valences in nonstoichiometric (Mn,Fe)(3-delta)O-4 nanoparticles. in Journal of Applied Physics
Amer Inst Physics, Melville., 111(7).
https://doi.org/10.1063/1.3700228

Antić B, Kremenović A, Jovic N, Pavlović MB, Jovalekic C, Nikolić AS, Goya GF, Weidenthaler C. Magnetization enhancement and cation valences in nonstoichiometric (Mn,Fe)(3-delta)O-4 nanoparticles. in Journal of Applied Physics. 2012;111(7).
doi:10.1063/1.3700228 .

Antić, Bratislav, Kremenović, Aleksandar, Jovic, N., Pavlović, Miodrag B., Jovalekic, C., Nikolić, Aleksandar S., Goya, G. F., Weidenthaler, C., "Magnetization enhancement and cation valences in nonstoichiometric (Mn,Fe)(3-delta)O-4 nanoparticles" in Journal of Applied Physics, 111, no. 7 (2012),
https://doi.org/10.1063/1.3700228 . .

TY  - JOUR
AU  - Pavlović, Miodrag B.
AU  - Jovalekic, C.
AU  - Nikolić, Aleksandar S.
AU  - Manojlović, Dragan D.
AU  - Šojić, Nešo
PY  - 2010
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1115
AB  - The influence of long term soft milling of a mixture of (1) Mg(OH)(2) and alpha-Fe2O3 and (2) Mg(OH)(2) and Fe(OH)(3) powders in a planetary ball mill on the reaction synthesis of nanosized MgFe2O4 ferrites was studied. Soft mechanochemical reaction leading to formation of the MgFe2O4 spinel phase was followed by scanning electron microscopy, transmission electron microscopy, X-ray diffraction and magnetisation measurements. The spinel phase formation was first observed after 5 h of milling and its formation was completed after 15 h in case (2). The synthesised MgFe2O4 ferrite had a nanocrystalline structure with a crystallite size of about 10 and 15 nm respectively for cases (1) and (2). Measurements after 15 h of milling show magnetisation values of 15.23 and 10.14 J T-1 kg(-1) respectively for cases (1) and (2).
PB  - Maney Publishing, Leeds
T2  - Materials Science and Technology
T1  - Soft mechanochemical synthesis of MgFe2O4 nanoparticles from the mixture of alpha-Fe2O3 with Mg(OH)(2) and Fe(OH)(3) with Mg(OH)(2)
VL  - 26
IS  - 8
SP  - 968
EP  - 974
DO  - 10.1179/174328409X415020
ER  - 

@article{
author = "Pavlović, Miodrag B. and Jovalekic, C. and Nikolić, Aleksandar S. and Manojlović, Dragan D. and Šojić, Nešo",
year = "2010",
abstract = "The influence of long term soft milling of a mixture of (1) Mg(OH)(2) and alpha-Fe2O3 and (2) Mg(OH)(2) and Fe(OH)(3) powders in a planetary ball mill on the reaction synthesis of nanosized MgFe2O4 ferrites was studied. Soft mechanochemical reaction leading to formation of the MgFe2O4 spinel phase was followed by scanning electron microscopy, transmission electron microscopy, X-ray diffraction and magnetisation measurements. The spinel phase formation was first observed after 5 h of milling and its formation was completed after 15 h in case (2). The synthesised MgFe2O4 ferrite had a nanocrystalline structure with a crystallite size of about 10 and 15 nm respectively for cases (1) and (2). Measurements after 15 h of milling show magnetisation values of 15.23 and 10.14 J T-1 kg(-1) respectively for cases (1) and (2).",
publisher = "Maney Publishing, Leeds",
journal = "Materials Science and Technology",
title = "Soft mechanochemical synthesis of MgFe2O4 nanoparticles from the mixture of alpha-Fe2O3 with Mg(OH)(2) and Fe(OH)(3) with Mg(OH)(2)",
volume = "26",
number = "8",
pages = "968-974",
doi = "10.1179/174328409X415020"
}

Pavlović, M. B., Jovalekic, C., Nikolić, A. S., Manojlović, D. D.,& Šojić, N.. (2010). Soft mechanochemical synthesis of MgFe2O4 nanoparticles from the mixture of alpha-Fe2O3 with Mg(OH)(2) and Fe(OH)(3) with Mg(OH)(2). in Materials Science and Technology
Maney Publishing, Leeds., 26(8), 968-974.
https://doi.org/10.1179/174328409X415020

Pavlović MB, Jovalekic C, Nikolić AS, Manojlović DD, Šojić N. Soft mechanochemical synthesis of MgFe2O4 nanoparticles from the mixture of alpha-Fe2O3 with Mg(OH)(2) and Fe(OH)(3) with Mg(OH)(2). in Materials Science and Technology. 2010;26(8):968-974.
doi:10.1179/174328409X415020 .

Pavlović, Miodrag B., Jovalekic, C., Nikolić, Aleksandar S., Manojlović, Dragan D., Šojić, Nešo, "Soft mechanochemical synthesis of MgFe2O4 nanoparticles from the mixture of alpha-Fe2O3 with Mg(OH)(2) and Fe(OH)(3) with Mg(OH)(2)" in Materials Science and Technology, 26, no. 8 (2010):968-974,
https://doi.org/10.1179/174328409X415020 . .

TY  - JOUR
AU  - Antić, Bratislav
AU  - Jovic, N.
AU  - Pavlović, Miodrag B.
AU  - Kremenović, Aleksandar
AU  - Manojlović, Dragan D.
AU  - Vučinić-Vasić, M.
AU  - Nikolić, Aleksandar S.
PY  - 2010
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/1053
AB  - In this paper we report results of structural, spectroscopic, and magnetic investigations of MgFe2O4 nanoparticles prepared by soft mechanochemical synthesis. MgFe2O4 nanoparticles crystallize in Fd3m space group with mixed cation distribution and reduced percentage of Fe3+ at tetrahedral (8a) sites. Discrepancy in the cation distribution compared to that in the bulk Mg-ferrite is one of the highest known. X-ray line broadening analysis reveals crystallite size and strain anisotropy. The saturation magnetization, M-sat=62 emu/g measured at 5 K is twice higher than that found in the bulk counterparts. Such high value of M-sat is attributed to the low value of cation inversion parameter (delta=0.69), to the core/shell structure of the nanoparticles and to the surface/volume ratio. Moumlssbauer spectrum collected at room temperature reveals ferrimagnetic ordering between Fe3+ ions in 8a and 16d sites, while zero-field-cooled (ZFC) and field-cooled (FC) M(T) measurements were shown superparamagnetic state above 350 K.
PB  - Amer Inst Physics, Melville
T2  - Journal of Applied Physics
T1  - Magnetization enhancement in nanostructured random type MgFe2O4 spinel prepared by soft mechanochemical route
VL  - 107
IS  - 4
DO  - 10.1063/1.3319563
ER  - 

@article{
author = "Antić, Bratislav and Jovic, N. and Pavlović, Miodrag B. and Kremenović, Aleksandar and Manojlović, Dragan D. and Vučinić-Vasić, M. and Nikolić, Aleksandar S.",
year = "2010",
abstract = "In this paper we report results of structural, spectroscopic, and magnetic investigations of MgFe2O4 nanoparticles prepared by soft mechanochemical synthesis. MgFe2O4 nanoparticles crystallize in Fd3m space group with mixed cation distribution and reduced percentage of Fe3+ at tetrahedral (8a) sites. Discrepancy in the cation distribution compared to that in the bulk Mg-ferrite is one of the highest known. X-ray line broadening analysis reveals crystallite size and strain anisotropy. The saturation magnetization, M-sat=62 emu/g measured at 5 K is twice higher than that found in the bulk counterparts. Such high value of M-sat is attributed to the low value of cation inversion parameter (delta=0.69), to the core/shell structure of the nanoparticles and to the surface/volume ratio. Moumlssbauer spectrum collected at room temperature reveals ferrimagnetic ordering between Fe3+ ions in 8a and 16d sites, while zero-field-cooled (ZFC) and field-cooled (FC) M(T) measurements were shown superparamagnetic state above 350 K.",
publisher = "Amer Inst Physics, Melville",
journal = "Journal of Applied Physics",
title = "Magnetization enhancement in nanostructured random type MgFe2O4 spinel prepared by soft mechanochemical route",
volume = "107",
number = "4",
doi = "10.1063/1.3319563"
}

Antić, B., Jovic, N., Pavlović, M. B., Kremenović, A., Manojlović, D. D., Vučinić-Vasić, M.,& Nikolić, A. S.. (2010). Magnetization enhancement in nanostructured random type MgFe2O4 spinel prepared by soft mechanochemical route. in Journal of Applied Physics
Amer Inst Physics, Melville., 107(4).
https://doi.org/10.1063/1.3319563

Antić B, Jovic N, Pavlović MB, Kremenović A, Manojlović DD, Vučinić-Vasić M, Nikolić AS. Magnetization enhancement in nanostructured random type MgFe2O4 spinel prepared by soft mechanochemical route. in Journal of Applied Physics. 2010;107(4).
doi:10.1063/1.3319563 .

Antić, Bratislav, Jovic, N., Pavlović, Miodrag B., Kremenović, Aleksandar, Manojlović, Dragan D., Vučinić-Vasić, M., Nikolić, Aleksandar S., "Magnetization enhancement in nanostructured random type MgFe2O4 spinel prepared by soft mechanochemical route" in Journal of Applied Physics, 107, no. 4 (2010),
https://doi.org/10.1063/1.3319563 . .

TY  - JOUR
AU  - Pavlović, Miodrag B.
AU  - Jovalekic, C.
AU  - Nikolić, Aleksandar S.
AU  - Manojlović, Dragan D.
AU  - Šojić, Nešo
PY  - 2009
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/998
AB  - The influence of long-term milling of a mixture of (1) MgO and alpha-Fe2O3, (2) MgCO3, and alpha-Fe2O3, and (3) Mg(OH)(2) and alpha-Fe2O3 powders in a planetary ball mill on the reaction synthesis of nanosized MgFe2O4 ferrites was studied. Mechanochemical reaction leading to formation of the MgFe2O4 spinel phase was followed by electron microscopy, (SEM and TEM), X-ray diffraction and magnetization measurements. The spinel phase was observed first in cases (1) and (2) after 5 h of milling, and its formation was observed in all cases after 10 h. The synthesized MgFe2O4 ferrite has a nanocrystalline structure with a crystallite size of about 11, 10, and 12 nm, respectively for cases (1)-(3). Magnetic measurements after 10 h of milling show magnetization values of 19.8 J/(Tkg), 23.5 J/(Tkg) and 13.8 J/(Tkg), respectively for the cases (1)-(3).
PB  - Springer, Dordrecht
T2  - Journal of Materials Science: Materials in Electronics
T1  - Mechanochemical synthesis of stoichiometric MgFe2O4 spinel
VL  - 20
IS  - 8
SP  - 782
EP  - 787
DO  - 10.1007/s10854-008-9802-2
ER  - 

@article{
author = "Pavlović, Miodrag B. and Jovalekic, C. and Nikolić, Aleksandar S. and Manojlović, Dragan D. and Šojić, Nešo",
year = "2009",
abstract = "The influence of long-term milling of a mixture of (1) MgO and alpha-Fe2O3, (2) MgCO3, and alpha-Fe2O3, and (3) Mg(OH)(2) and alpha-Fe2O3 powders in a planetary ball mill on the reaction synthesis of nanosized MgFe2O4 ferrites was studied. Mechanochemical reaction leading to formation of the MgFe2O4 spinel phase was followed by electron microscopy, (SEM and TEM), X-ray diffraction and magnetization measurements. The spinel phase was observed first in cases (1) and (2) after 5 h of milling, and its formation was observed in all cases after 10 h. The synthesized MgFe2O4 ferrite has a nanocrystalline structure with a crystallite size of about 11, 10, and 12 nm, respectively for cases (1)-(3). Magnetic measurements after 10 h of milling show magnetization values of 19.8 J/(Tkg), 23.5 J/(Tkg) and 13.8 J/(Tkg), respectively for the cases (1)-(3).",
publisher = "Springer, Dordrecht",
journal = "Journal of Materials Science: Materials in Electronics",
title = "Mechanochemical synthesis of stoichiometric MgFe2O4 spinel",
volume = "20",
number = "8",
pages = "782-787",
doi = "10.1007/s10854-008-9802-2"
}

Pavlović, M. B., Jovalekic, C., Nikolić, A. S., Manojlović, D. D.,& Šojić, N.. (2009). Mechanochemical synthesis of stoichiometric MgFe2O4 spinel. in Journal of Materials Science: Materials in Electronics
Springer, Dordrecht., 20(8), 782-787.
https://doi.org/10.1007/s10854-008-9802-2

Pavlović MB, Jovalekic C, Nikolić AS, Manojlović DD, Šojić N. Mechanochemical synthesis of stoichiometric MgFe2O4 spinel. in Journal of Materials Science: Materials in Electronics. 2009;20(8):782-787.
doi:10.1007/s10854-008-9802-2 .

Pavlović, Miodrag B., Jovalekic, C., Nikolić, Aleksandar S., Manojlović, Dragan D., Šojić, Nešo, "Mechanochemical synthesis of stoichiometric MgFe2O4 spinel" in Journal of Materials Science: Materials in Electronics, 20, no. 8 (2009):782-787,
https://doi.org/10.1007/s10854-008-9802-2 . .

TY  - JOUR
AU  - Nikolić, Aleksandar S.
AU  - Osmokrovic, P.
AU  - Manojlović, Dragan D.
AU  - Šojić, Nešo
AU  - Pavlović, Miodrag B.
PY  - 2008
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/949
AB  - Nickel ferrites are among the most abundant members of the soft magnetic materials. In the last few decades, the interest for new methods of their preparation has increased, due to the fact that physical and chemical properties of these materials depend strongly on preparation conditions. In this paper, samples of NiFe2O4 were synthesized by standard sintering and via a chemical procedure from complex compounds with acetylacetonato ligands. Formation of the NiFe2O4 spinel phase was monitored by SEM, TEM, and XRID measurements. Average particle size was 20x20x4 nm (slabs). Masurements of the real and imaginary parts of permittivity and permeability were conducted on the obtained nickel ferrite samples in the 7-12 GHz frequency range. In addition to this, the electromegnetic radiation (EMR) absorption coefficient was calculated for all samples, using the Nicolson-Ross analysis. Examination of the obtained results lead to the conclusion that the method of synthesis, as well as final particle size, influence the EMR absorption coefficient in the observed frequency range.
PB  - Natl Inst Optoelectronics, Bucharest-Magurele
T2  - Journal of Optoelectronics and Advanced Materials
T1  - Dependence of nickel ferrite EMR absorption coefficient on the method of preparation
VL  - 10
IS  - 6
SP  - 1390
EP  - 1395
UR  - https://hdl.handle.net/21.15107/rcub_cherry_949
ER  - 

@article{
author = "Nikolić, Aleksandar S. and Osmokrovic, P. and Manojlović, Dragan D. and Šojić, Nešo and Pavlović, Miodrag B.",
year = "2008",
abstract = "Nickel ferrites are among the most abundant members of the soft magnetic materials. In the last few decades, the interest for new methods of their preparation has increased, due to the fact that physical and chemical properties of these materials depend strongly on preparation conditions. In this paper, samples of NiFe2O4 were synthesized by standard sintering and via a chemical procedure from complex compounds with acetylacetonato ligands. Formation of the NiFe2O4 spinel phase was monitored by SEM, TEM, and XRID measurements. Average particle size was 20x20x4 nm (slabs). Masurements of the real and imaginary parts of permittivity and permeability were conducted on the obtained nickel ferrite samples in the 7-12 GHz frequency range. In addition to this, the electromegnetic radiation (EMR) absorption coefficient was calculated for all samples, using the Nicolson-Ross analysis. Examination of the obtained results lead to the conclusion that the method of synthesis, as well as final particle size, influence the EMR absorption coefficient in the observed frequency range.",
publisher = "Natl Inst Optoelectronics, Bucharest-Magurele",
journal = "Journal of Optoelectronics and Advanced Materials",
title = "Dependence of nickel ferrite EMR absorption coefficient on the method of preparation",
volume = "10",
number = "6",
pages = "1390-1395",
url = "https://hdl.handle.net/21.15107/rcub_cherry_949"
}

Nikolić, A. S., Osmokrovic, P., Manojlović, D. D., Šojić, N.,& Pavlović, M. B.. (2008). Dependence of nickel ferrite EMR absorption coefficient on the method of preparation. in Journal of Optoelectronics and Advanced Materials
Natl Inst Optoelectronics, Bucharest-Magurele., 10(6), 1390-1395.
https://hdl.handle.net/21.15107/rcub_cherry_949

Nikolić AS, Osmokrovic P, Manojlović DD, Šojić N, Pavlović MB. Dependence of nickel ferrite EMR absorption coefficient on the method of preparation. in Journal of Optoelectronics and Advanced Materials. 2008;10(6):1390-1395.
https://hdl.handle.net/21.15107/rcub_cherry_949 .

Nikolić, Aleksandar S., Osmokrovic, P., Manojlović, Dragan D., Šojić, Nešo, Pavlović, Miodrag B., "Dependence of nickel ferrite EMR absorption coefficient on the method of preparation" in Journal of Optoelectronics and Advanced Materials, 10, no. 6 (2008):1390-1395,
https://hdl.handle.net/21.15107/rcub_cherry_949 .

TY  - JOUR
AU  - Nikolić, Aleksandar S.
AU  - Puzovic, J. M.
AU  - Pavlović, Miodrag B.
AU  - Osmokrovic, P.
AU  - Lazarevic, Z.
PY  - 2007
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/881
AB  - Ultrafine nickel-ferrite materials were prepared from complex compounds with acetylacetonato-ligands, according to a previously developed method. The influence of different atmospheres (air, oxygen and nitrogen) applied during thermal decomposition of precursors was studied. Thermal decomposition was carried out with the heating rate of 10 degrees C/min and the cooling rate of 20 degrees C/min. Characterization of the final products was performed by X-ray and TEM analysis. Reviewing the products, we concluded that the optimal temperatures for the preparation of pure ultrafine ferrite materials were 400 degrees C for air atmosphere, and 500 degrees C for O-2 and N-2 atmospheres. All samples prepared at lower temperatures show the presence of the nickel-phase, while all samples prepared at higher temperatures show the presence of the hematite-phase.
PB  - Natl Inst Optoelectronics, Bucharest-Magurele
T2  - Journal of Optoelectronics and Advanced Materials
T1  - Preparation of nickel-ferrites from complex compounds with acetylacetonato-ligands in different atmosphere conditions
VL  - 9
IS  - 9
SP  - 2731
EP  - 2733
UR  - https://hdl.handle.net/21.15107/rcub_cherry_881
ER  - 

@article{
author = "Nikolić, Aleksandar S. and Puzovic, J. M. and Pavlović, Miodrag B. and Osmokrovic, P. and Lazarevic, Z.",
year = "2007",
abstract = "Ultrafine nickel-ferrite materials were prepared from complex compounds with acetylacetonato-ligands, according to a previously developed method. The influence of different atmospheres (air, oxygen and nitrogen) applied during thermal decomposition of precursors was studied. Thermal decomposition was carried out with the heating rate of 10 degrees C/min and the cooling rate of 20 degrees C/min. Characterization of the final products was performed by X-ray and TEM analysis. Reviewing the products, we concluded that the optimal temperatures for the preparation of pure ultrafine ferrite materials were 400 degrees C for air atmosphere, and 500 degrees C for O-2 and N-2 atmospheres. All samples prepared at lower temperatures show the presence of the nickel-phase, while all samples prepared at higher temperatures show the presence of the hematite-phase.",
publisher = "Natl Inst Optoelectronics, Bucharest-Magurele",
journal = "Journal of Optoelectronics and Advanced Materials",
title = "Preparation of nickel-ferrites from complex compounds with acetylacetonato-ligands in different atmosphere conditions",
volume = "9",
number = "9",
pages = "2731-2733",
url = "https://hdl.handle.net/21.15107/rcub_cherry_881"
}

Nikolić, A. S., Puzovic, J. M., Pavlović, M. B., Osmokrovic, P.,& Lazarevic, Z.. (2007). Preparation of nickel-ferrites from complex compounds with acetylacetonato-ligands in different atmosphere conditions. in Journal of Optoelectronics and Advanced Materials
Natl Inst Optoelectronics, Bucharest-Magurele., 9(9), 2731-2733.
https://hdl.handle.net/21.15107/rcub_cherry_881

Nikolić AS, Puzovic JM, Pavlović MB, Osmokrovic P, Lazarevic Z. Preparation of nickel-ferrites from complex compounds with acetylacetonato-ligands in different atmosphere conditions. in Journal of Optoelectronics and Advanced Materials. 2007;9(9):2731-2733.
https://hdl.handle.net/21.15107/rcub_cherry_881 .

Nikolić, Aleksandar S., Puzovic, J. M., Pavlović, Miodrag B., Osmokrovic, P., Lazarevic, Z., "Preparation of nickel-ferrites from complex compounds with acetylacetonato-ligands in different atmosphere conditions" in Journal of Optoelectronics and Advanced Materials, 9, no. 9 (2007):2731-2733,
https://hdl.handle.net/21.15107/rcub_cherry_881 .

TY  - JOUR
AU  - Osmokrovic, P
AU  - Jovalekic, C
AU  - Manojlović, Dragan D.
AU  - Pavlović, Miodrag B.
PY  - 2006
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/758
AB  - The influence of long-term milling of a mixture of MnCO3 and alpha-Fe2O3, and of MnO2 and alpha-Fe2O3 powders in a planetary ball mill on the reaction synthesis of nanosized MnFe2O4 ferrites was studied. The mechano-chemical reaction leading to formation of the MnFe2O4 spinel phase was followed by X-ray diffraction. The spinel phase was first observed after 10 h of milling and its formation was completed after 20 h in case of the MnCO3 - alpha-Fe2O3 mixture. The synthesized MnFe2O4 ferrite has a nanocrystalline structure with a crystallite size of about 28 nm. The thermal treatment of the as-milled powder at 400 degrees C for 4 h led to formation of the MnFe2O4 crystalline phase in case of the mixture of MnCO3 and alpha-Fe2O3, but in MnO2 alpha-Fe2O3 case thermal treatment at temperatures of 400 degrees C and higher leads to formation of (Mn,Fe)203 and separation of Mn2O3 and Fe2O3.
PB  - Natl Inst Optoelectronics, Bucharest-Magurele
T2  - Journal of Optoelectronics and Advanced Materials
T1  - Synthesis of MnFe2O4 nanoparticles by mechanochemical reaction
VL  - 8
IS  - 1
SP  - 312
EP  - 314
UR  - https://hdl.handle.net/21.15107/rcub_cherry_758
ER  - 

@article{
author = "Osmokrovic, P and Jovalekic, C and Manojlović, Dragan D. and Pavlović, Miodrag B.",
year = "2006",
abstract = "The influence of long-term milling of a mixture of MnCO3 and alpha-Fe2O3, and of MnO2 and alpha-Fe2O3 powders in a planetary ball mill on the reaction synthesis of nanosized MnFe2O4 ferrites was studied. The mechano-chemical reaction leading to formation of the MnFe2O4 spinel phase was followed by X-ray diffraction. The spinel phase was first observed after 10 h of milling and its formation was completed after 20 h in case of the MnCO3 - alpha-Fe2O3 mixture. The synthesized MnFe2O4 ferrite has a nanocrystalline structure with a crystallite size of about 28 nm. The thermal treatment of the as-milled powder at 400 degrees C for 4 h led to formation of the MnFe2O4 crystalline phase in case of the mixture of MnCO3 and alpha-Fe2O3, but in MnO2 alpha-Fe2O3 case thermal treatment at temperatures of 400 degrees C and higher leads to formation of (Mn,Fe)203 and separation of Mn2O3 and Fe2O3.",
publisher = "Natl Inst Optoelectronics, Bucharest-Magurele",
journal = "Journal of Optoelectronics and Advanced Materials",
title = "Synthesis of MnFe2O4 nanoparticles by mechanochemical reaction",
volume = "8",
number = "1",
pages = "312-314",
url = "https://hdl.handle.net/21.15107/rcub_cherry_758"
}

Osmokrovic, P., Jovalekic, C., Manojlović, D. D.,& Pavlović, M. B.. (2006). Synthesis of MnFe2O4 nanoparticles by mechanochemical reaction. in Journal of Optoelectronics and Advanced Materials
Natl Inst Optoelectronics, Bucharest-Magurele., 8(1), 312-314.
https://hdl.handle.net/21.15107/rcub_cherry_758

Osmokrovic P, Jovalekic C, Manojlović DD, Pavlović MB. Synthesis of MnFe2O4 nanoparticles by mechanochemical reaction. in Journal of Optoelectronics and Advanced Materials. 2006;8(1):312-314.
https://hdl.handle.net/21.15107/rcub_cherry_758 .

Osmokrovic, P, Jovalekic, C, Manojlović, Dragan D., Pavlović, Miodrag B., "Synthesis of MnFe2O4 nanoparticles by mechanochemical reaction" in Journal of Optoelectronics and Advanced Materials, 8, no. 1 (2006):312-314,
https://hdl.handle.net/21.15107/rcub_cherry_758 .

TY  - JOUR
AU  - Nikolić, Aleksandar S.
AU  - Likar-Smiljanić, V
AU  - Jovalekic, C
AU  - Cajkovski, T
AU  - Biljic, R
AU  - Lazarevic, Z
AU  - Pavlović, Miodrag B.
PY  - 2004
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/641
AB  - Nickel and nickel-zinc ferrites are ones of the most abundant members of the soft magnetic materials. In the last few years, the interest in new methods of their preparation increases, because it is well known that the physical and chemical properties of these materials strongly depend on the preparing conditions. Powder samples of soft ferrites of NiFe2O4 and NixZn1-xFC2O4 were synthesized by a classical sintering procedure, planetary mill synthesis, and by a chemical procedure from complex compounds with acetylacetonato-ligands. Average particle sizes were 1 mum, 40 nm and 20x20x4 nm (slabs), respectively. All of the obtained materials were measured ill the frequency range of 7 - 12 GHz for the real and the imaginary part of permittivity and permeability, and the absorption coefficients were calculated. A concurrent analysis of the obtained values showed the influence of the method of synthesis, as well as the particle size on the absorption coefficients in the applied frequency range.
PB  - Trans Tech Publications Ltd, Zurich-Uetikon
T2  - Materials Science Forum
T1  - Nicolson-Ross analysis of absorption coefficients of nickel and nickel-zinc ferrite powders prepared using a novel method
SP  - 405
EP  - 410
DO  - 10.4028/www.scientific.net/MSF.453-454.405
ER  - 

@article{
author = "Nikolić, Aleksandar S. and Likar-Smiljanić, V and Jovalekic, C and Cajkovski, T and Biljic, R and Lazarevic, Z and Pavlović, Miodrag B.",
year = "2004",
abstract = "Nickel and nickel-zinc ferrites are ones of the most abundant members of the soft magnetic materials. In the last few years, the interest in new methods of their preparation increases, because it is well known that the physical and chemical properties of these materials strongly depend on the preparing conditions. Powder samples of soft ferrites of NiFe2O4 and NixZn1-xFC2O4 were synthesized by a classical sintering procedure, planetary mill synthesis, and by a chemical procedure from complex compounds with acetylacetonato-ligands. Average particle sizes were 1 mum, 40 nm and 20x20x4 nm (slabs), respectively. All of the obtained materials were measured ill the frequency range of 7 - 12 GHz for the real and the imaginary part of permittivity and permeability, and the absorption coefficients were calculated. A concurrent analysis of the obtained values showed the influence of the method of synthesis, as well as the particle size on the absorption coefficients in the applied frequency range.",
publisher = "Trans Tech Publications Ltd, Zurich-Uetikon",
journal = "Materials Science Forum",
title = "Nicolson-Ross analysis of absorption coefficients of nickel and nickel-zinc ferrite powders prepared using a novel method",
pages = "405-410",
doi = "10.4028/www.scientific.net/MSF.453-454.405"
}

Nikolić, A. S., Likar-Smiljanić, V., Jovalekic, C., Cajkovski, T., Biljic, R., Lazarevic, Z.,& Pavlović, M. B.. (2004). Nicolson-Ross analysis of absorption coefficients of nickel and nickel-zinc ferrite powders prepared using a novel method. in Materials Science Forum
Trans Tech Publications Ltd, Zurich-Uetikon., 405-410.
https://doi.org/10.4028/www.scientific.net/MSF.453-454.405

Nikolić AS, Likar-Smiljanić V, Jovalekic C, Cajkovski T, Biljic R, Lazarevic Z, Pavlović MB. Nicolson-Ross analysis of absorption coefficients of nickel and nickel-zinc ferrite powders prepared using a novel method. in Materials Science Forum. 2004;:405-410.
doi:10.4028/www.scientific.net/MSF.453-454.405 .

Nikolić, Aleksandar S., Likar-Smiljanić, V, Jovalekic, C, Cajkovski, T, Biljic, R, Lazarevic, Z, Pavlović, Miodrag B., "Nicolson-Ross analysis of absorption coefficients of nickel and nickel-zinc ferrite powders prepared using a novel method" in Materials Science Forum (2004):405-410,
https://doi.org/10.4028/www.scientific.net/MSF.453-454.405 . .

TY  - JOUR
AU  - Nikolić, Aleksandar S.
AU  - Cvetkovic, N
AU  - Djuric, S
AU  - Puzovic, J
AU  - Pavlović, Miodrag B.
PY  - 1998
UR  - https://cherry.chem.bg.ac.rs/handle/123456789/383
AB  - The conditions for the synthesis of ultra fine Ni-ferrites powder were investigated. The basic components were Fe(III) and Ni(II) complex compounds with acetylacetonato- (2,4 pentadione) ligands. Nanometrics powders were obtained by annealing the homogeneous mixture of the basic components in protected nitrogen atmosphere at different temperatures. The annealing temperature varied from 100 to 700 degrees C and the heating rate was 10 degrees C/min. The temperature effects on the composition and particles size of Ni-ferrites powders synthesized at 300, 400, 500 and 600 degrees C were investigated using X-ray analysis and transmission electron microscopy. Nanometrics Ni-ferrites powder was produced with less then 20 nm average particles size at 500 degrees C.
PB  - Transtec Publications Ltd, Zurich-Uetikon
T2  - Materials Science Forum
T1  - Temperature influence on the composition of Ni-ferrite powders obtained from complex compounds with acetylacetonato-ligands
SP  - 199
EP  - 202
DO  - 10.4028/www.scientific.net/MSF.282-283.199
ER  - 

@article{
author = "Nikolić, Aleksandar S. and Cvetkovic, N and Djuric, S and Puzovic, J and Pavlović, Miodrag B.",
year = "1998",
abstract = "The conditions for the synthesis of ultra fine Ni-ferrites powder were investigated. The basic components were Fe(III) and Ni(II) complex compounds with acetylacetonato- (2,4 pentadione) ligands. Nanometrics powders were obtained by annealing the homogeneous mixture of the basic components in protected nitrogen atmosphere at different temperatures. The annealing temperature varied from 100 to 700 degrees C and the heating rate was 10 degrees C/min. The temperature effects on the composition and particles size of Ni-ferrites powders synthesized at 300, 400, 500 and 600 degrees C were investigated using X-ray analysis and transmission electron microscopy. Nanometrics Ni-ferrites powder was produced with less then 20 nm average particles size at 500 degrees C.",
publisher = "Transtec Publications Ltd, Zurich-Uetikon",
journal = "Materials Science Forum",
title = "Temperature influence on the composition of Ni-ferrite powders obtained from complex compounds with acetylacetonato-ligands",
pages = "199-202",
doi = "10.4028/www.scientific.net/MSF.282-283.199"
}

Nikolić, A. S., Cvetkovic, N., Djuric, S., Puzovic, J.,& Pavlović, M. B.. (1998). Temperature influence on the composition of Ni-ferrite powders obtained from complex compounds with acetylacetonato-ligands. in Materials Science Forum
Transtec Publications Ltd, Zurich-Uetikon., 199-202.
https://doi.org/10.4028/www.scientific.net/MSF.282-283.199

Nikolić AS, Cvetkovic N, Djuric S, Puzovic J, Pavlović MB. Temperature influence on the composition of Ni-ferrite powders obtained from complex compounds with acetylacetonato-ligands. in Materials Science Forum. 1998;:199-202.
doi:10.4028/www.scientific.net/MSF.282-283.199 .

Nikolić, Aleksandar S., Cvetkovic, N, Djuric, S, Puzovic, J, Pavlović, Miodrag B., "Temperature influence on the composition of Ni-ferrite powders obtained from complex compounds with acetylacetonato-ligands" in Materials Science Forum (1998):199-202,
https://doi.org/10.4028/www.scientific.net/MSF.282-283.199 . .