Dependence of nickel ferrite EMR absorption coefficient on the method of preparation
Апстракт
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 parti...cle size, influence the EMR absorption coefficient in the observed frequency range.
Кључне речи:
nanocrystalline materials / ferrites / absorbers / sintering / Nicolson-Ross analysisИзвор:
Journal of Optoelectronics and Advanced Materials, 2008, 10, 6, 1390-1395Издавач:
- Natl Inst Optoelectronics, Bucharest-Magurele
Колекције
Институција/група
Hemijski fakultet / Faculty of ChemistryTY - 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 .