Структуры, магнитные состояния и индуцированные давлением явления в сложных наноразмерных магнитных оксидах
The structural, magnetic states and pressure-induced phenomena in complex nanosized magnetic oxides

Дополнительно

Прислана: 22.01.2026; Принята: 13.02.2026; Опубликовано 23.04.2026;
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Как цитировать

Д. П. Козленко, С. Е. Кичанов, Е. В. Лукин, О. Н. Лис, А. В. Руткаускас, Б. Н. Савенко, Н. М. Белозерова, Ж. Ирак, Г. С. Римский, А. Л. Желудкевич, Н. Т. Данг. "The structural, magnetic states and pressure-induced phenomena in complex nanosized magnetic oxides" Natural Sci. Rev. 3 200702 (2026)
https://doi.org/10.54546/NaturalSciRev.200702
BibTex
Д. П. Козленко1,a, С. Е. Кичанов1, Е. В. Лукин1, О. Н. Лис1,b, А. В. Руткаускас1, Б. Н. Савенко1, Н. М. Белозерова1,2, Ж. Ирак3, Г. С. Римский1, А. Л. Желудкевич4, Н. Т. Данг5
  • 1Объединенный институт ядерных исследований, г. Дубна, Россия
  • 2Центр фотоники и двумерных материалов, Московский физико-технический институт, г. Долгопрудный, Россия
  • 3Институт физики академии наук Чешской Республики, Прага, Чешская Республика
  • 4Научно-практический центр Национальной академии наук Беларуси по материаловедению, Минск, Беларусь
  • 5Институт исследований и разработок, Университет Дуй Тан, Дананг, Вьетнам
  • adenk@nf.jinr.ru
  • blisa_9477@mail.ru
DOI: 10.54546/NaturalSciRev.200702
Ключевые слова: высокое давление, нейтронная дифракция, манганиты, ферриты, магнитная структура
Категории: Физика , Физика конденсированного состояния (эксперимент) , 70-летие ОИЯИ
PDF (Английский)

Аннотация

В работе представлены результаты недавних исследований кристаллической и магнитной структуры сложных наноразмерных оксидов марганца и железа, полученные методами нейтронной дифракции, рентгеновской дифракции и других комплементарных методов исследований в широком диапазоне термодинамических параметров (температуры и давления). В наноструктурированных манганитах La1-xSrxMnO3 (x=0.28−0.47) обнаружено сосуществование ферромагнитного (ФМ) и А-типа антиферромагнитного (АФМ) магнитных состояний, что указывает на образование наночастиц типа «ядро-оболочка» с различными структурными и магнитными особенностями внутренней и внешней компонент наночастицы. Воздействие высокого давления значительно изменяет соотношение долей ФМ и АФМ фаз в наноструктуированных манганитах. Для наноструктурированного феррита Zn0.34Fe2.53O4 определено распределение атомов цинка и железа в кристаллической структуре, а также получены параметры кристаллической и магнитной структуры этого соединения. Обнаружено наличие кислородных вакансий и рассчитано их относительное количество. В соединении Zn0.34Fe2.53O4, а также в аналогичном феррите CoFe2O4 при высоких давлениях наблюдается постепенный структурный фазовый переход из исходной кубической структуры типа шпинели в орторомбическую пост-шпинельную фазу. В случае феррита CoFe2O4 обнаруженный фазовый переход сопровождается подавлением исходной ферримагнитной фазы. Примечательно, что в большинстве случаев наноразмерных манганитов и ферритов особенности кристаллической структуры и упорядоченных магнитных состояний заметно отличаются от соответствующих объёмных форм этих материалов. Подробно обсуждаются микроскопические структурные механизмы, ответственные за это различие.

Поддерживающие организации

O. N. Lis, A. V. Rutkauskas and A. L. Zhaludkevich acknowledge the support of the joint grants of the Russian Science Foundation, RSF 24-42-10003, and the Belarusian Republican Foundation for Fundamental Research (BRFFR), T23RNFM-023.

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