Production of high-coercivity materials based on BaFe12O19 by crystallization of plasma-sputtered powders
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http://iopscience.iop.org/article/10.1088/2053-1591/aa98ac/metahttps://elib.sfu-kras.ru/handle/2311/110621
Автор:
Лепешев, Анатолий Александрович
Карпов, Игорь Васильевич
Ушаков, Анатолий Васильевич
Коллективный автор:
Институт инженерной физики и радиоэлектроники
Политехнический институт
НОЦ (кафедра) ЮНЕСКО "Новые материалы и технологии"
Кафедра машиностроения
Дата:
2017-11Журнал:
Materials Research ExpressКвартиль журнала в Scopus:
Q1Квартиль журнала в Web of Science:
Q3Библиографическое описание:
Лепешев, Анатолий Александрович. Production of high-coercivity materials based on BaFe12O19 by crystallization of plasma-sputtered powders [Текст] / Анатолий Александрович Лепешев, Игорь Васильевич Карпов, Анатолий Васильевич Ушаков // Materials Research Express. — 2017. — Т. 4 (№ 11). — С. 116107Аннотация:
Abstract
Ferrite powders BaFe12O19 were studied in the present work after plasma heating and rapid quenching in differentenvironment: in air, in water and on the copper disk. X-ray diffraction analysis (XRD), scanning electron microscopy (SEM), vibration magnetometry (VSM) and Mossbauer spectroscopy (NGR) showed that the powder produced after quenching on the copper disk was in amorphous-crystalline state. The correlation between the annealing temperature and the value of magnetic parameters (coercive field and saturation magnetization) was established. Annealing at 1200 K for 2 hours increases the coercive force up to 6.3 kOe. The processes of crystallization from the amorphous phase, that improve the magnetic properties of barium ferrite, are discussed.