Magnetization enhancement in nanostructured random type MgFe2O4 spinel prepared by soft mechanochemical route
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Аутори
Antić, BratislavJović, Nataša G.
Pavlović, Miodrag B.
Kremenović, Aleksandar S.
Manojlović, Dragan D.
Vučinić-Vasić, Milica
Nikolić, Aleksandar S.
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Метаподаци
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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.
Кључне речи:
crystallites / ferrimagnetic materials / magnesium compounds / magnetic anisotropy / Mossbauer effect / nanofabrication / nanostructured materialsИзвор:
Journal of Applied Physics, 2010, 107, 4Финансирање / пројекти:
- The Serbian Ministry of Science and Technological Development
DOI: 10.1063/1.3319563
ISSN: 0021-8979
WoS: 000275028900041
Scopus: 2-s2.0-77749301713
Колекције
Институција/група
VinčaTY - JOUR AU - Antić, Bratislav AU - Jović, Nataša G. AU - Pavlović, Miodrag B. AU - Kremenović, Aleksandar S. AU - Manojlović, Dragan D. AU - Vučinić-Vasić, Milica AU - Nikolić, Aleksandar S. PY - 2010 UR - https://vinar.vin.bg.ac.rs/handle/123456789/3921 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. 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 Jović, Nataša G. and Pavlović, Miodrag B. and Kremenović, Aleksandar S. and Manojlović, Dragan D. and Vučinić-Vasić, Milica 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.", 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., Jović, N. G., Pavlović, M. B., Kremenović, A. S., 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, 107(4). https://doi.org/10.1063/1.3319563
Antić B, Jović NG, Pavlović MB, Kremenović AS, 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, Jović, Nataša G., Pavlović, Miodrag B., Kremenović, Aleksandar S., Manojlović, Dragan D., Vučinić-Vasić, Milica, 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 . .