Magnetic properties evolution of the CoxFe3-xO4/SiO2 system due to advanced thermal treatment at 700 °C and 1000 °C
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- 作者：Thomas Dipponga ; dippong.thomas@yahoo.ro" class="auth_mail" title="E-mail the corresponding author ; Erika Andrea Leveib ; erika.levei@icia.ro" class="auth_mail" title="E-mail the corresponding author ; Claudiu Tanaseliab ; Mihai Gaborc ; mihai.gabor@phys.utcluj.ro" class="auth_mail" title="E-mail the corresponding author ; Mircea Nasuic ; Lucian Barbu Tudorand ; lbarbu@hasdeu.ubbcluj.ro" class="auth_mail" title="E-mail the corresponding author ; Gheorghe Borodie ; borodi@itim-cj.ro" class="auth_mail" title="E-mail the corresponding author
- 关键词：Cobalt ferrite ; Silica ; Gels ; Nanocrystallites ; Magnetic properties
- 刊名：Journal of Magnetism and Magnetic Materials
- 出版年：2016
- 出版时间：15 July 2016
- 年：2016
- 卷：410
- 期：Complete
- 页码：47-54
- 全文大小：2912 K
文摘
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CoxFe3−xO4 (x=0.5–2.5) system embedded in the silica matrix was synthesised.
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The CoFe2O4 was obtained as single magnetic phase.
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The saturation magnetization decrease with the increase of the Co/Fe ratio.
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Magnetization increase and coercive field decrease with the calcination temperature.
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The CoFe2O4 crystallite size increase from 5–10.3 nm (700 °C) to 9–34 nm (1000 °C).