Particularities of the magnetic state of CuO nanoparticles produced by low-pressure plasma arc discharge
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URI (для ссылок/цитирований):
https://link.springer.com/article/10.1007%2Fs10948-016-3885-4https://elib.sfu-kras.ru/handle/2311/69523
Автор:
Лепешев, Анатолий Александрович
Karpov, I. V.
Ushakov, A. V.
Balaev, D. A.
Krasikov, A. A.
Dubrovskiy, A. A.
Velikanov, D. A.
Petrov, M. I.
Коллективный автор:
Институт нефти и газа
Институт инженерной физики и радиоэлектроники
НОЦ ЮНЕСКО "Новые материалы и технологии"
Кафедра общей физики
Дата:
2017-04Журнал:
Journal of Superconductivity and Novel MagnetismКвартиль журнала в Scopus:
Q3Квартиль журнала в Web of Science:
Q3Библиографическое описание:
Лепешев, Анатолий Александрович. Particularities of the magnetic state of CuO nanoparticles produced by low-pressure plasma arc discharge [Текст] / Анатолий Александрович Лепешев, I. V. Karpov, A. V. Ushakov, D. A. Balaev, A. A. Krasikov, A. A. Dubrovskiy, D. A. Velikanov, M. I. Petrov // Journal of Superconductivity and Novel Magnetism. — 2017. — Т. 30 (№ 4). — С. 931-936Текст статьи не публикуется в открытом доступе в соответствии с политикой журнала.
Аннотация:
Abstract Copper oxide nanoparticles were produced by direct plasmachemical synthesis in a plasma arc discharge of low pressure. The formation of CuO nanoparticles with an average size of 12 nm and narrow size distribution intervals was determined by using the x-ray diffraction analysis and TEM microscopy methods. It was defined by using a vibration magnetometer and a SQUID magnetometer, that the magnetic properties of CuO nanoparticles with such size were extremely different from the magnetic properties of bulk antiferromagnetic CuO. Structural defects caused the formation of a ferromagnetic state, remaining at least up to the room temperature. The temperature of corresponding antiferromagnetic ordering was significantly decreased (down to ∼ 100 K). Meanwhile, some of the copper surface spins showed a spin-glass behavior at low temperatures.