采用溶胶-凝胶法制备Zn2+取代W型钡钴铁氧体BaZnxCo2-xFe16O27(x=0.8,1.0,1.2)粉体.利用X-射线衍射、扫描电子显微镜、振动样品磁强计和矢量网络分析仪对样品进行表征.研究焙烧温度以及Zn2+取代量对W型钡钴铁氧体晶体结构的影响.分析不同Zn2+取代量下,W型钡钴铁氧体的微观形貌、磁性能以及微波电磁特性.结果表明:采用溶胶-凝胶法,在焙烧温度为1300℃时,可获得平均晶粒尺寸约为25.06 ～32.04nm,粒径分布均匀,颗粒尺寸约为3～ 9μm、部分形状规则且呈六角片状的W型钡钴铁氧体粉体；当x=1.2时,样品室温比饱和磁化强度Ms达最大值,为105.99 A·m2· kg-1;在4～ 11GHz频段内,样品的磁损耗随着Zn2+取代量的增加而增加,其值为0.2 ～0.8,而在11～ 18GHz频段内,磁损耗随着Zn2+掺杂量的增加而减小,其值为0 ～0.5.
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