Magnetic Properties of Erbium Gallium Gallate under High Magnetic Field
来源期刊：JOURNAL OF RARE EARTHS2004年增刊第3期
论文作者：YANG Cuihong Cheng Haiying Zhang Xijuan Wang Wei
Key words：magnetic field; magnetization; anisotropy; multiplet;
Abstract: A theoretical investigation on the magnetic properties of rare-earth Er3+ in Er3 Ga5 O12 was reported. The average magnetic moments(M) for applied magnetic field H parallel to the [001 ], [ 100], [ 110], [ 111 ] direction was studied based on the quantum theory. Temperature dependence of the magnetic properties is analyzed for H applied parallel to the [ 100] and [ 111 ] crystallographic directions. The magnetization decreases with increasing temperature,showing good agreement with thermal effect. A strong anisotropy of the magnetization is found under high magnetic field, but when the magnetic field is small, M and H are proportional.
YANG Cuihong1，Cheng Haiying1，Zhang Xijuan1，Wang Wei3
(1.College of Physics Science and Technology, Yangzhou University, Yangzhou 225002, China;
2.Department of Basic Course, Yancheng Institute of Technology, Yancheng 224002, China;
3.Department of Applied Physics,Shanghai Jiaotong University, Shanghai 200030, China)
Abstract:A theoretical investigation on the magnetic properties of rare-earth Er3+ in Er3 Ga5 O12 was reported. The average magnetic moments(M) for applied magnetic field H parallel to the [001 ], [ 100], [ 110], [ 111 ] direction was studied based on the quantum theory. Temperature dependence of the magnetic properties is analyzed for H applied parallel to the [ 100] and [ 111 ] crystallographic directions. The magnetization decreases with increasing temperature,showing good agreement with thermal effect. A strong anisotropy of the magnetization is found under high magnetic field, but when the magnetic field is small, M and H are proportional.
Key words:magnetic field; magnetization; anisotropy; multiplet;
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