Peculiarities of magnetic behavior of CuO nanoparticles produced by plasma-arc synthesis in a wide temperature range
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URI (для ссылок/цитирований):
https://link.springer.com/article/10.1007%2Fs10948-017-4311-2https://elib.sfu-kras.ru/handle/2311/110623
Автор:
Ушаков, Анатолий Васильевич
Карпов, Игорь Васильевич
Лепешев, Анатолий Александрович
Коллективный автор:
Институт инженерной физики и радиоэлектроники
Политехнический институт
НОЦ (кафедра) ЮНЕСКО "Новые материалы и технологии"
Кафедра машиностроения
Дата:
2017-12Журнал:
Journal of Superconductivity and Novel MagnetismКвартиль журнала в Scopus:
Q3Квартиль журнала в Web of Science:
Q3Библиографическое описание:
Ушаков, Анатолий Васильевич. Peculiarities of magnetic behavior of CuO nanoparticles produced by plasma-arc synthesis in a wide temperature range [Текст] / Анатолий Васильевич Ушаков, Игорь Васильевич Карпов, Анатолий Александрович Лепешев // Journal of Superconductivity and Novel Magnetism. — 2017. — Т. 30 (№ 12). — С. 3351-3354Аннотация:
Abstract
Copper oxide nanoparticles, produced by direct plasmochemical synthesis in a low-pressure arc discharge plasma, show a wide variety of magnetic properties depending on the strength of the external magnetic field and the temperature. At low strength of the field and throughout the studied temperature range the ferromagnetic state dominates. This state is caused by disordering of the spins on the surface of the nanoparticles. At high strength of the field and under the temperatures of less than 200 K, nanoparticles exhibit a paramagnetic state due to the spin-glass behavior of copper atoms. At high strength of the field (more than 3 kOe) and under the temperature of above 300 K, the diamagnetic state of nanoparticles is observed, due to local eddy currents caused by oxygen vacancies. The temperature of antiferromagnetic ordering under study is significantly lowered (down to ~ 100 K).