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This article is cited in 1 scientific paper (total in 1 paper)
Magnetism
Morphology and magnetic properties of hollow Co$_{3}$O$_{4}$ spheres
A. V. Dmitrieva, E. V. Vladimirovaa, A. P. Esaulkova, V. D. Zhuravleva, M. V. Kuznetsova, S. A. Uporovb a Institute of Solid State Chemistry, Urals Branch of the Russian Academy of Sciences, Ekaterinburg
b Institute of Metallurgy, Ural Division of the Russian Academy of Sciences, Yekaterinburg
Abstract:
Nanostructured hollow Co$_{3}$O$_{4}$ spheres are synthesized by ultrasonic spray pyrolysis. Nanocrystals forming the sphere structure have different sizes and packing density, depending on the synthesis conditions. The samples are studied by X-ray diffraction, scanning electron microscopy, low-temperature nitrogen adsorption, vacuum pycnometry, and Raman and X-ray photoelectron spectroscopies. The field and temperature dependences of magnetization show that the magnetic properties and the Néel temperature of Co$_{3}$O$_{4}$ hollow spheres are determined by the size and packing density of nanocrystals.
Keywords:
ultrasound spray pyrolysis, hollow CoO spheres, weak ferromagnetism, exchange bias, Néel temperature.
Received: 20.08.2020 Revised: 20.08.2020 Accepted: 26.08.2020
Citation:
A. V. Dmitriev, E. V. Vladimirova, A. P. Esaulkov, V. D. Zhuravlev, M. V. Kuznetsov, S. A. Uporov, “Morphology and magnetic properties of hollow Co$_{3}$O$_{4}$ spheres”, Fizika Tverdogo Tela, 62:12 (2020), 2069–2076; Phys. Solid State, 62:12 (2020), 2332–2339
Linking options:
https://www.mathnet.ru/eng/ftt8222 https://www.mathnet.ru/eng/ftt/v62/i12/p2069
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