Low-temperature magnetic behavior of nanostructured ferrite compositions prepared by plasma spraying
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DOI:
10.1063/1.5001506URI (для ссылок/цитирований):
http://aip.scitation.org/doi/10.1063/1.5001506https://elib.sfu-kras.ru/handle/2311/69524
Автор:
Лепешев, Анатолий Александрович
Ushakov, A. V.
Karpov, I. V.
Коллективный автор:
Институт нефти и газа
НОЦ ЮНЕСКО "Новые материалы и технологии"
Дата:
2017-09Журнал:
Journal of Applied PhysicsКвартиль журнала в Scopus:
Q2Квартиль журнала в Web of Science:
Q2Библиографическое описание:
Лепешев, Анатолий Александрович. Low-temperature magnetic behavior of nanostructured ferrite compositions prepared by plasma spraying [Текст] / Анатолий Александрович Лепешев, A. V. Ushakov, I. V. Karpov // Journal of Applied Physics. — 2017. — Т. 122 (№ 10). — С. 104103Текст статьи не публикуется в открытом доступе в соответствии с политикой журнала.
Аннотация:
Peculiarities of low-temperature behavior of the magnetic properties of disordered spinel ferrites,
prepared by means of dilution with the P2O5 amorphizing agent and by rapid quenching,
were investigated. A sharp increase in the saturation magnetization rS, of ferrite compositions
(1-x)MeFe2O4 xP2O5 (where Me is Ni, Fe, Mn, etc.), was observed at temperatures T<80 K. It was
established that the temperature dependences of rS and v 1 (where v is the magnetic susceptibility)
of the nickel ferrite composition (x¼0.6) have an extremum at T¼11 K. In this case, the effect of
“memory” is observed for rS(T), which represents the dependence of rS (T¼4.2 K) on the magnitude
of the magnetic field in which cooling was carried out. The asymptotic Curie temperature was
determined by extrapolation of the linear part of the v 1(T) dependence and found to be equal to
150 K. We present an analysis of the observed dependences from the viewpoint of a complex
magnetic state, combining the features of the near antiferromagnetic and ferrimagnetic boundarysurface
spin ordering.
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