稀土La^(3+)离子取代对M型锶铁氧体的结构和磁性的影响  

Influences of Rare Earth La3+ Substitution on Structure andMagnetic Properties of M-Type Strontium Ferrites

作　　者：刘先松[1] 钟伟[1] 顾本喜[1] 都有为[1] 

机构地区：[1]南京大学,江苏南京210093

出　　处：《稀有金属材料与工程》2002年第5期385-388,共4页Rare Metal Materials and Engineering

基　　金：国家重点基础研究发展规划资助项目(G1999064508)

摘　　要：采用陶瓷工艺,制备了Sr1-xLaxFe12O19M型锶铁氧体。系统地研究了稀土La3+取代Sr2+对M型六角铁氧体的结构和磁性的影响。La3+离子取代部分的Sr2+离子能明显改善M型铁氧体的内禀磁性。M-type strontium ferrites with some of the Sr-2 substituted by the rare earth La3+, according to the formula Sr1-xLaxFe12O19, were prepared by ceramic processing. The influences of the substituted amount of La3+ on structure and magnetic properties of Sr1-xLaxFe12O19, compounds were systematically investigated. It was found that a suitable amount of La3+ substitution may remarkably increase the saturation magnetization sigma(s) and the intrinsic coercivity H-cJ.

关 键 词：M型锶铁氧体 结构 磁性 镧离子 

分 类 号：TM277[一般工业技术—材料科学与工程]