采用溶剂热法制得具有花状结构的Fe3O4亚微米球,该微球直径约4μm,是由Fe3O4纳米片组装而成的.采用X线衍射仪(XRD)、振动样品磁强计(VSM)和扫描电子显微镜(SEM)对产物结构、磁性和形貌进行表征.将样品与石蜡按质量比1:1制成同轴样品,测试其2～18 GHz下的电磁参数并进行分析计算.研究发现,由于偶极子极化、自然共振和涡流损耗,具有花状结构的Fe3O4亚微米球在高频范围内显示出了较为良好的宽频吸收特性.
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