Thermal Evolution of Cation Distribution/Crystallite Size and Their Correlation with the Magnetic State of Yb-Substituted Zinc Ferrite Nanoparticles
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Аутори
Vučinić-Vasić, MilicaBožin, Emil S.
Bessais, Lotfi
Stojanovic, G.
Kozmidis-Luburic, U.
Abeykoon, M.
Jančar, Boštjan
Meden, A.
Kremenović, Aleksandar S.
Antić, Bratislav
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Evolution of the structural and magnetic properties of ZnFe1.95Yb0.05O4 nanoparticles, prepared via a high-energy ball milling route and exposed to further thermal annealing/heating, was assessed in detail and correlation of these properties explored. inversion, heating of the sample to similar to 500 degrees C is found to rapidly alter the cation distribution from mixed to normal, in agreement with the known cation preferences. Under the same conditions the crystallite size only slowly grows. By further thermal treatment appreciably. An interrelationship among the lattice parameter, octahedral site occupancy, and crystallite size has been established. The observations are (a) both the site occupancy of Fe3+ at octahedral 16d spinel sites (N-16d(Fe3+)) and the cubic lattice parameter rapidly increase with an initial increase of the crystallite size, (b) the lattice parameter increases with increasing occupancy, N-16d(Fe3+), and (c) there appears to be a critical nanoparticle diameter (...approximately 15 nm) above which both the site occupancy and lattice parameter values are saturated. The magnetic behavior of the annealed samples appears to be correlated to the evolution of both the cation distribution and crystallite size, as follows. As-prepared samples and those annealed at lower temperatures show superparamagnetic behavior at room temperature, presumably as a consequence of the Fe3+ distribution and strong Fe3+(8a)-O-Fe3+(16d) superexchange interactions. Samples with a nanopartide diameter greater than 12 nm and with almost normal distributions exhibit the paramagnetic state. The coercive field is found to decrease with an increase of the crystallite size. Partial Yb3+/Fe3+ substitution is found to increase the inversion parameter and saturation magnetization. Detailed knowledge of the thermal evolution of structural/microstructural parameters allows control over the cation distribution and crystallite size and hence the magnetic properties of nanoferrites.
Извор:
Journal of Physical Chemistry. C, 2013, 117, 23, 12358-12365Финансирање / пројекти:
- Магнетни и радионуклидима обележени наноструктурни материјали за примене у медицини (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45015)
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-98CH10886], U.S. Department of Energy, Office of Science [DE-AC02-06CH11357]
DOI: 10.1021/jp403459t
ISSN: 1932-7447
WoS: 000320640500054
Scopus: 2-s2.0-84879100020
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Институција/група
VinčaTY - JOUR AU - Vučinić-Vasić, Milica AU - Božin, Emil S. AU - Bessais, Lotfi AU - Stojanovic, G. AU - Kozmidis-Luburic, U. AU - Abeykoon, M. AU - Jančar, Boštjan AU - Meden, A. AU - Kremenović, Aleksandar S. AU - Antić, Bratislav PY - 2013 UR - https://vinar.vin.bg.ac.rs/handle/123456789/5555 AB - Evolution of the structural and magnetic properties of ZnFe1.95Yb0.05O4 nanoparticles, prepared via a high-energy ball milling route and exposed to further thermal annealing/heating, was assessed in detail and correlation of these properties explored. inversion, heating of the sample to similar to 500 degrees C is found to rapidly alter the cation distribution from mixed to normal, in agreement with the known cation preferences. Under the same conditions the crystallite size only slowly grows. By further thermal treatment appreciably. An interrelationship among the lattice parameter, octahedral site occupancy, and crystallite size has been established. The observations are (a) both the site occupancy of Fe3+ at octahedral 16d spinel sites (N-16d(Fe3+)) and the cubic lattice parameter rapidly increase with an initial increase of the crystallite size, (b) the lattice parameter increases with increasing occupancy, N-16d(Fe3+), and (c) there appears to be a critical nanoparticle diameter (approximately 15 nm) above which both the site occupancy and lattice parameter values are saturated. The magnetic behavior of the annealed samples appears to be correlated to the evolution of both the cation distribution and crystallite size, as follows. As-prepared samples and those annealed at lower temperatures show superparamagnetic behavior at room temperature, presumably as a consequence of the Fe3+ distribution and strong Fe3+(8a)-O-Fe3+(16d) superexchange interactions. Samples with a nanopartide diameter greater than 12 nm and with almost normal distributions exhibit the paramagnetic state. The coercive field is found to decrease with an increase of the crystallite size. Partial Yb3+/Fe3+ substitution is found to increase the inversion parameter and saturation magnetization. Detailed knowledge of the thermal evolution of structural/microstructural parameters allows control over the cation distribution and crystallite size and hence the magnetic properties of nanoferrites. T2 - Journal of Physical Chemistry. C T1 - Thermal Evolution of Cation Distribution/Crystallite Size and Their Correlation with the Magnetic State of Yb-Substituted Zinc Ferrite Nanoparticles VL - 117 IS - 23 SP - 12358 EP - 12365 DO - 10.1021/jp403459t ER -
@article{ author = "Vučinić-Vasić, Milica and Božin, Emil S. and Bessais, Lotfi and Stojanovic, G. and Kozmidis-Luburic, U. and Abeykoon, M. and Jančar, Boštjan and Meden, A. and Kremenović, Aleksandar S. and Antić, Bratislav", year = "2013", abstract = "Evolution of the structural and magnetic properties of ZnFe1.95Yb0.05O4 nanoparticles, prepared via a high-energy ball milling route and exposed to further thermal annealing/heating, was assessed in detail and correlation of these properties explored. inversion, heating of the sample to similar to 500 degrees C is found to rapidly alter the cation distribution from mixed to normal, in agreement with the known cation preferences. Under the same conditions the crystallite size only slowly grows. By further thermal treatment appreciably. An interrelationship among the lattice parameter, octahedral site occupancy, and crystallite size has been established. The observations are (a) both the site occupancy of Fe3+ at octahedral 16d spinel sites (N-16d(Fe3+)) and the cubic lattice parameter rapidly increase with an initial increase of the crystallite size, (b) the lattice parameter increases with increasing occupancy, N-16d(Fe3+), and (c) there appears to be a critical nanoparticle diameter (approximately 15 nm) above which both the site occupancy and lattice parameter values are saturated. The magnetic behavior of the annealed samples appears to be correlated to the evolution of both the cation distribution and crystallite size, as follows. As-prepared samples and those annealed at lower temperatures show superparamagnetic behavior at room temperature, presumably as a consequence of the Fe3+ distribution and strong Fe3+(8a)-O-Fe3+(16d) superexchange interactions. Samples with a nanopartide diameter greater than 12 nm and with almost normal distributions exhibit the paramagnetic state. The coercive field is found to decrease with an increase of the crystallite size. Partial Yb3+/Fe3+ substitution is found to increase the inversion parameter and saturation magnetization. Detailed knowledge of the thermal evolution of structural/microstructural parameters allows control over the cation distribution and crystallite size and hence the magnetic properties of nanoferrites.", journal = "Journal of Physical Chemistry. C", title = "Thermal Evolution of Cation Distribution/Crystallite Size and Their Correlation with the Magnetic State of Yb-Substituted Zinc Ferrite Nanoparticles", volume = "117", number = "23", pages = "12358-12365", doi = "10.1021/jp403459t" }
Vučinić-Vasić, M., Božin, E. S., Bessais, L., Stojanovic, G., Kozmidis-Luburic, U., Abeykoon, M., Jančar, B., Meden, A., Kremenović, A. S.,& Antić, B.. (2013). Thermal Evolution of Cation Distribution/Crystallite Size and Their Correlation with the Magnetic State of Yb-Substituted Zinc Ferrite Nanoparticles. in Journal of Physical Chemistry. C, 117(23), 12358-12365. https://doi.org/10.1021/jp403459t
Vučinić-Vasić M, Božin ES, Bessais L, Stojanovic G, Kozmidis-Luburic U, Abeykoon M, Jančar B, Meden A, Kremenović AS, Antić B. Thermal Evolution of Cation Distribution/Crystallite Size and Their Correlation with the Magnetic State of Yb-Substituted Zinc Ferrite Nanoparticles. in Journal of Physical Chemistry. C. 2013;117(23):12358-12365. doi:10.1021/jp403459t .
Vučinić-Vasić, Milica, Božin, Emil S., Bessais, Lotfi, Stojanovic, G., Kozmidis-Luburic, U., Abeykoon, M., Jančar, Boštjan, Meden, A., Kremenović, Aleksandar S., Antić, Bratislav, "Thermal Evolution of Cation Distribution/Crystallite Size and Their Correlation with the Magnetic State of Yb-Substituted Zinc Ferrite Nanoparticles" in Journal of Physical Chemistry. C, 117, no. 23 (2013):12358-12365, https://doi.org/10.1021/jp403459t . .