Effect of CeO_(2)doping on the coercivity of 2:17 type SmCo magnets  

作　　者：高晓磊 刘壮 王广庆 竺超群 程文鑫 张明晓 刘新才 陈仁杰 闫阿儒 Xin-Cai LiuRen-Jie Chen;Xiao-Lei Gao;Zhuang Liu;Guang-Qing Wang;Chao-Qun Zhu;Wen-Xin Cheng;Ming-Xiao Zhang;Xin-Cai Liu;Ren-Jie Chen;A-Ru Yan(School of Materials Science and Chemical Engineering,Ningbo University,Ningbo 315211,China;CISRI&NIMTE Joint Innovation Center for Rare Earth Permanent Magnets,Ningbo Institute of Material Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China)

机构地区：[1]School of Materials Science and Chemical Engineering,Ningbo University,Ningbo 315211,China [2]CISRI&NIMTE Joint Innovation Center for Rare Earth Permanent Magnets,Ningbo Institute of Material Technology and Engineering,Chinese Academy of Sciences,Ningbo 315201,China

出　　处：《Chinese Physics B》2023年第9期486-491,共6页中国物理B（英文版）

基　　金：the National Key R&D Program of China(Grant No.2021YFB3503102);the Zhejiang Provincial Key R&D Program of China(Grant No.2021C01191);the Science and Technology Innovation 2025 Major Project of Ningbo(Grant No.2020Z037)。

摘　　要：The effects of CeO_(2)doping on the magnetic properties and microstructure of 2:17 type SmCo magnets are studied.With the increase of CeO_(2)from 0 wt.%to 3 wt.%,the coercivity of the magnets increases from 22.22 kOe to over 29.37 kOe,which is an increase of more than 30%.When the doping content is lower than 1 wt.%,the remanence and magnetic energy product of the magnets remain almost constant.Both decrease sharply as the doping concentration further increases.After CeO_(2)doping,the oxide content in the magnet increases significantly and the Ce element is uniformly distributed in the magnet.Observing the magnetic domains reveals that doping with CeO_(2)can refine the magnetic domains and make the magnetic domain wall more stable,resulting in a significant increase in the coercivity of the magnets.

关 键 词：2:17 type SmCo magnets COERCIVITY magnetic domain MICROSTRUCTURE 

分 类 号：O469[理学—凝聚态物理]