Influences of La and Ce doping on giant magnetocaloric effect of EuTiO

被引：0

作者：

莫兆军 ^{[1
]}

孙启磊 ^{[2
]}

沈俊 ^{[3
]}

杨墨 ^{[2
]}

黎玉进 ^{[2
]}

李岚 ^{[1
]}

刘国栋 ^{[2
]}

唐成春 ^{[2
]}

孟凡斌 ^{[2
]}

机构：

[1] School of Material Science and Engineering, Institute of Material Physics, Key Laboratory of Display Materials and Photoelectric Devices of Ministry of Education of Ministry of Education, Key Laboratory for Optoelectronic Materials and Devices of Tianjin,T

[2] School of Material Science and Engineering, Hebei University of Technology

[3] Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences

来源：

Chinese Physics B | 2018年 / 01期

关键词：

magnetocaloric effect; magnetic entropy change; magnetic phase transformation;

D O I：

暂无

中图分类号：

O482.6 [热电与热磁效应];

学科分类号：

070205 ; 0805 ; 080502 ; 0809 ;

摘要：

Giant reversible magnetocaloric effects and magnetic properties in Eu0.9R0.1TiO3 （R = La, Ce） are investigated. The antiferromagnetic ordering of pure Eu TiO3 can significantly change to be ferromagnetic as substitution of La（x = 0.1）and Ce（x = 0.1） ions for Eu2+ ions. The values of-?SM and RC are evaluated to be 10.8 J/（kg·K） and 51.8 J/kg for Eu0.9Ce0.1TiO3 and 11 J/（kg·K） and 39.3 J/kg for Eu0.9La0.1TiO3 at a magnetic field change of 10 kOe, respectively. The large low-field enhancements of-?SM and RC can be attributed to magnetic phase transition. The giant reversible MCE and large RC suggest that Eu0.9R0.1TiO3 （R = La, Ce） compounds could be promising materials in low temperature and low magnetic field refrigerants.

引用

页码：551 / 555

页数：5