摘要：介绍了颗粒磁记录介质发展现状，着重总结、分析了钡铁氧体超细粉末制备技术最新进展，包括溶胶－凝胶法、共沉淀法、微乳液法等最新合成方法。这些方法是合成粒径小于１００ｎｍ的钡铁氧体超微粉末的有效方法。

关键词：磁记录介质;钡铁氧体;超微粉末;

Abstract：In this paper, the current situation of magnetic recording media is presented.Specially, some of the new progresses in preparation methods of the ultrafine barium ferrite powders are reviewed.

Keyword：magnetic recording media;barium ferrite;ultrafine powder;