Evolution of coercivity and its angular dependence in CoFe nanostructures subjected to field cooling
SURFACE AND INTERFACE ANALYSIS(2014)
摘要
Evolution of coercivity and its angular dependence in CoFe nanostructures subjected to field cooling has been investigated in this work. Spherical CoFe grains with an average diameter of 30nm were grown on a silicon substrate using electron beam evaporation. Further, the as-deposited sample was subjected to field cooling. The morphology and topography of the sample before and after field cooling were characterized by atomic force microscopy and SEM. Magnetic force microscopy indicated that there is a good uniformity of magnetization throughout the sample after field cooling. Vibrating sample magnetometer measurements indicate that the coercivity in CoFe nanostructures is dependent on shape of the nanostructures. Copyright (c) 2013 John Wiley & Sons, Ltd.
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关键词
CoFe,thin film,nanostructures,angular dependence,coercivity,field cooling,AFM,VSM,MFM,SEM
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