62.20.de Elastic moduli;
71.70.Ch Crystal and ligand fields;
75.80.+q Magnetomechanical and magnetoelectric effects;
magnetostriction;
galvanomagnetic effects;
D O I:
10.1140/epjb/e2008-00077-1
中图分类号:
O469 [凝聚态物理学];
学科分类号:
070205 ;
摘要:
The temperature dependence of the elastic constants in Tb3Ga5O12 was measured and analysed with a simple crystal field model. The magneto-elastic coupling constants have been deduced from this experiment. The coupling constant g(Gamma 5), related to the c(44) mode, is anomalously large. These coupling constants are important for the interpretation of the phonon Hall effect.