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Crystallization of magnetic particles in nNa2O-9SrO-6Fe2O3-8B2O3 (n = 1 and 4) glassesстатья Исследовательская статья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 марта 2019 г.
- Авторы: Trusov L.A., Babarkina O.V., Anokhin E.O., Sleptsova A.E., Gorbachev E.A., Eliseev A.A., Filippova T.V., Vasiliev A.V., Kazin P.E.
- Журнал: Journal of Magnetism and Magnetic Materials
- Том: 476
- Год издания: 2019
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 311
- Последняя страница: 316
- DOI: 10.1016/j.jmmm.2018.12.083
- Аннотация: Magnetic glass-ceramics with composition nNa2O-9SrO-6Fe2O3-8B2O3 (n = 1 and 4) were prepared by fast quenching of the molten oxide mixtures and subsequent thermal treatment of the obtained glasses at 450 – 950°C. The samples were investigated by differential thermal analysis, x-ray powder diffraction, electron microscopy, and SQIUD magnetometry. Increasing of the sodium oxide content leads to a significant decrease of the glass transition, devitrification, and melting temperatures. Just above the glass transition temperature (525°C for n = 1 and 430°C for n = 4) superparamagnetic γ-Fe2O3 nanoparticles precipitate, which, at elevating annealing temperature, are substituted by thin hexaferrite nanoplatelets with coercivities of 2000 – 4000 Oe; the annealing at higher temperatures results in crystallization of the submicron hexaferrite particles with a coercivity of up to 6000 Oe. Thus the glass-ceramics are highly applicable sources of non-sintered nanoparticles with various morphologies and magnetic properties.
- Добавил в систему: Трусов Лев Артемович