六方晶フェライト磁性粒子およびその製造方法、ならびに磁気記録用磁性粉および磁気記録媒体

摘要

Hexagonal ferrite magnetic particles have an activation volume ranging from 1,000 nm3 to 1,500 nm3, and &Dgr;E10%/kT, thermal stability at 10% magnetization reversal, is equal to or greater than 40.