Mechanisms of High Coercivity in Ni/NiO Composite Films by Post Annealing

查看全文 作　　者：J.B. [1]Yi;J. [1]Ding;Mansoor Bin Abdul [2]Jalil;B.H. [1]Liu;S. [1]Thongmee;J.H. [1]Yin;Z.L. [1]Zhao

机构地区：[1]Department of Materials Science and Engineering, National University of Singapore, 119260, Singapore;[2]Department of Electrical & Computer Engineering, National University of Singapore, 119260, Singapore

出　　处：《材料科学与工程学报》索引2007年第25卷第6期,共3页

摘　　要：A coercivity as large as 2.4 kOe has been achieved in the Ni/NiO composite film after an annealing under a magnetic field of 10 kOe and an O_2 partial pressure of 0.001 torr.The coercivity was attributed to the strong exchange coupling of Ni and NiO.Small grain size of Ni and NiO was observed after the post-annealing.The enhanced coercivity is probably associated with the domain wall pinning by local energy minima,the distribution of Ni and NiO,and the domain structure in the interface of Ni/NiO generated under the presence of the magnetic field during the post-annealing. 关键词：矫顽性镍氧化镍复合薄膜焊后退火交换耦合

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Mechanisms of High Coercivity in Ni/NiO Composite Films by Post Annealing

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