Effective Field Based on the Exchange Interaction in Gd3Ga5O12 under Low and Moderate Magnetic Field at Low Temperature  

作　　者：胡风 张国营 黄逸佳 夏往所 

机构地区：[1]Department of Physics, College of Science, China University of Mining and Technology, Xuzhou 221008

出　　处：《Chinese Physics Letters》2014年第5期165-168,共4页中国物理快报（英文版）

摘　　要：The roles of the exchange interaction between different magnetic ions in the gadolinium gallium garnet Gd3 Ga5O12 are systematically investigated. The effective field based on the exchange interaction is expressed as functions of the temperature T and applied field He. Furthermore, the effects of T and He on the magnetic moment and the entropy of GdsGa5O12 are studied in the ranges of 0 〈 He 〈 9 T and 3 〈 T 〈 40K. The computational results are consistent with the experimental data. Our study reveals that the applied field and temperature have important influences on the exchange interaction of Gd3 Ga5 O12 at low temperature.The roles of the exchange interaction between different magnetic ions in the gadolinium gallium garnet Gd3 Ga5O12 are systematically investigated. The effective field based on the exchange interaction is expressed as functions of the temperature T and applied field He. Furthermore, the effects of T and He on the magnetic moment and the entropy of GdsGa5O12 are studied in the ranges of 0 〈 He 〈 9 T and 3 〈 T 〈 40K. The computational results are consistent with the experimental data. Our study reveals that the applied field and temperature have important influences on the exchange interaction of Gd3 Ga5 O12 at low temperature.

分 类 号：TM27[一般工业技术—材料科学与工程] TM271[电气工程—电工理论与新技术]