Bi^(3+)、Ce^(3+)离子极大增强铁石榴石磁光法拉第效应微观机制研究  

Study on the Microscopically Mechanisms of Giant Faraday Rotation in Bi^(3+)-and Ce^(3+)-substituted Iron Garnet

作　　者：黄敏[1] 赵渭忠[1] 张守业[2] 

机构地区：[1]浙江大学物理系,浙江杭州310027 [2]浙江大学材料系,浙江杭州310027

出　　处：《材料科学与工程》2001年第1期26-29,共4页Materials Science and Engineering

摘　　要：采用单离子晶格模型 ,以磁光量子理论计算了Bi3+、Ce3+离子替代的稀土铁石榴石晶体中Bi3+、Ce3+离子的晶场能级 ,波函数及能态间电偶极跃迁几率 ,进而计算了Bi3+、Ce3+离子对法拉第旋转角θF 的贡献 ,获得了与实验符合较好的计算结果 ,加深了对Bi3+、Ce3+离子极大增强铁石榴石磁光效应微观机制的认识。The split energy levels,occupation probabilities,wave function and electrical dipole transition induced by crystal field and exchange interaction for the Ce 3+ ions in Ce 3+ \|substituted and the Bi 3+ ions in Bi 3+ \|substituted iron garnets at room temperature based on quantum theory has been calculated.Furthermore,the calculation of the Faraday rotation contributed by the Ce 3+ and Bi 3+ ions has also been carried out.The crystal field and the super\|exchange interaction are two crucial factors in determining the Faraday rotation.The theoretical results are in good those of experiments.\;

关 键 词：法拉第旋转 电偶极跃迁 铁石榴石 铋离子 铈离子 增强机制 磁电效应 晶体场 

分 类 号：O482.5[理学—固体物理]