Magnetization enhancement in nanostructured random type MgFe2O4 spinel prepared by soft mechanochemical route
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Antić, BratislavJovic, N.
Pavlović, Miodrag B.
Kremenović, Aleksandar
Manojlović, Dragan D.
Vučinić-Vasić, M.
Nikolić, Aleksandar S.
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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 superpa...ramagnetic state above 350 K.
Keywords:
crystallites / ferrimagnetic materials / magnesium compounds / magnetic anisotropy / Mossbauer effect / nanofabrication / nanostructured materialsSource:
Journal of Applied Physics, 2010, 107, 4Publisher:
- Amer Inst Physics, Melville
Funding / projects:
- Serbian Ministry of Science and Technological Development
DOI: 10.1063/1.3319563
ISSN: 0021-8979
WoS: 000275028900041
Scopus: 2-s2.0-77749301713
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Hemijski fakultet / Faculty of ChemistryTY - 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 . .