明显增强的镧掺杂锶铁氧体的磁光克尔效应  

Remarkable Enhancement of Magneto-Optical Kerr Effect of Strontium Ferrites by Doping La

作　　者：朱德如[1] 刘先松[1] 胡锋[1] JOSE Luis Menendez 

机构地区：[1]安徽大学物理与材料科学学院磁性材料安徽省工程技术研究中心,合肥230039 [2]Universidad de Oviedo,Parque Tecnologico de Asturias,33428 Llanera,Spain

出　　处：《材料研究学报》2012年第1期91-95,共5页Chinese Journal of Materials Research

基　　金：国家自然科学基金51072002;安徽省教育厅重点科研项目KJ2010A008;安徽大学“211工程”学术创新团队02303402科研课题;安徽大学研究生学术创新研究y9h090013资助项目~~

摘　　要：采用陶瓷法制备了稀土La^(3+)掺杂的锶铁氧体Sr_(1-x)La_xFe_(12)O_(19)(x=0,0.05,0.10,0.15,0.20)。系统地研究了La^(3+)取代对材料结构、磁性能的影响,特别是对磁光克尔效应的影响。实验结果表明,La^(3+)取代Sr^(2+)能显著增强锶铁氧体的磁光克尔效应,当x=0.20时,与SrFe_(12)O_(19)相比,磁光克尔效应增加到了1%。La-substituted strontium ferrites, according to the formula Srl-xLaxFe12019 （x = 0, 0.05, 0.10, 0.15, 0.20）, were prepared by the conventional ceramic technology. The influences of La3＋ substitution on the structures, magnetic properties and magneto-optical Kerr effect of Sr1-xLaxFe12019 were systematically investigated. The experimental results showed that a strong magneto-optical activity was induced in strontium ferrites by doping La. When x = 0.20, the magneto-optical activity of the sample Sr0.sLao.2Fe12019 was 1% higher than that of SrFe12019.

关 键 词：无机非金属材料 锶铁氧体 镧掺杂 磁性能 磁光克尔效应 

分 类 号：TM271[一般工业技术—材料科学与工程]