Exchange bias in finite sized NiO nanoparticles with Ni clusters
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- 作者：Ashish Chhaganlal Gandhi ; Jauyn Grace Lin ; jglin@ntu.edu.tw" class="auth_mail" title="E-mail the corresponding author
- 关键词：NiO ; Ni clusters ; Frozen spins ; FMR ; Local field ; Defects ; Exchange bias
- 刊名：Journal of Magnetism and Magnetic Materials
- 出版年：2017
- 出版时间：15 February 2017
- 年：2017
- 卷：424
- 期：Complete
- 页码：221-225
- 全文大小：878 K
文摘
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Structural and magnetic properties of finite sized NiO nanoparticles are systematically investigated with several advanced techniques.
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A strong interaction between ferromagnetic and antiferromagnetic phases is found below 150 K.
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Exchange bias field in finite sized NiO nanoparticles is due to anisotropy energy of Ni clusters over riding the domain wall energy of NiO.