Effects of Doping on the Magnetic Properties and Frustration of Hexagonal YMn0.9A0.1O3（A=Al,Fe,and Cu）  

作　　者：肖利霞 金昭 夏正才 时丽然 黄俊伟 陈柏蓉 尚翠 魏蒙 龙卓 

机构地区：[1]Wuhan National High Magnetic Field Center,Huazhong University of Science and Technology [2]WenHua College [3]School of Physics,Huazhong University of Science and Technology

出　　处：《Chinese Physics Letters》2015年第1期145-149,共5页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 11104091

摘　　要：The doping effects on the frustration and the magnetic properties in hexagonal compounds ot YMn0.9A0.1O3 （A=A1, Fe and Cu） are investigated. Experimental results indicate that both the non-magnetic and magnetic ion dopants lead to the increase of magnetic moments and the decrease of the absolute value of Curie-Weiss temperature （｜θcw｜）- Compared with pure YMnOa, the geometrical frustration of YMn0.9 A0. 1O3 is greatly suppressed and the magnetic coupling in that exhibits dopant-dependent. In addition, for the doped YMno.gAo.103, the antiferromagnetic transition temperature （TN） is also suppressed slightly, which shows an abnormal dilution effect and it may be ascribed to the reduction of frustration due to the chemical substitution.The doping effects on the frustration and the magnetic properties in hexagonal compounds ot YMn0.9A0.1O3 （A=A1, Fe and Cu） are investigated. Experimental results indicate that both the non-magnetic and magnetic ion dopants lead to the increase of magnetic moments and the decrease of the absolute value of Curie-Weiss temperature （｜θcw｜）- Compared with pure YMnOa, the geometrical frustration of YMn0.9 A0. 1O3 is greatly suppressed and the magnetic coupling in that exhibits dopant-dependent. In addition, for the doped YMno.gAo.103, the antiferromagnetic transition temperature （TN） is also suppressed slightly, which shows an abnormal dilution effect and it may be ascribed to the reduction of frustration due to the chemical substitution.

关 键 词：net Effects of Doping on the Magnetic Properties and Frustration of Hexagonal YMn O3 A FE AFM AL 

分 类 号：O482.5[理学—固体物理] O483[理学—物理]