使用微波辅助Poly方法制备了直径范围在100 nm～180 nm单分散的Ni球,用磁力显微镜(MFM)测其磁结构.进一步对Ni球表面氧化获得了高度球化的NicoreNiOshell结构,采用XRD,TEM,XPS和EDAX对其进行了测量分析,并用VSM和SQUID进一步讨论了铁磁/反铁磁的界面耦合效应.同时,估算了磁性交换偏置耦合场与颗粒尺寸的关系.
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