Giant low-field magnetocaloric effect in EuTi(1-x)NbxO3(x = 0.05, 0.1, 0.15, and 0.2) compounds

作     者：Wen-Hao Jiang Zhao-Jun Mo Jia-Wei Luo Zhe-Xuan Zheng Qiu-Jie Lu Guo-Dong Liu Jun Shen Lan Li 姜文昊;莫兆军;罗佳薇;郑哲轩;卢秋杰;刘国栋;沈俊;李岚

作者机构：School of Material Science and EngineeringInstitute of Material PhysicsKey Laboratory of Display Materials and Photoelectric Devices of Ministry of EducationKey Laboratory for Optoelectronic Materials and Devices of TianjinTianjin University of TechnologyTianjin 300191China Key Laboratory of CryogenicsTechnical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China School of Material Science and EngineeringHebei University of TechnologyTianjin 300401China 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2020年第29卷第3期

页      面：396-401页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：Project supported by the Science&Technology Development Fund of Tianjin Education Commission for Higher Education China(Grant No.2017KJ247) 

主　　题：magnetocaloric effect magnetic entropy change magnetic phase transformation 

摘      要：The magnetic properties and magnetocaloric effect(MCE)of EuTi(1-x)NbxO3(x=0.05,0.1,0.15,and 0.2)compounds are *** to electronic doping,parts of Ti ions are replaced by Nb ions,the lattice constant increases and a small number of Ti^(4+)(3d^0)ions change into Ti^(3+)(3d^1).It is the ferromagnetism state that is dominant in the derivative *** values of the maximum magnetic entropy change(-?SM^(max))are 10.3 J/kg·K,9.6 J/kg·K,13.1 J/kg·K,and 11.9 J/kg·K for EuTi(1-x)NbxO3(x=0.05,0.1,0.15,and 0.2)compounds and the values of refrigeration capacity are 36,33,86,and 80 J/kg as magnetic field changes in a range of 0 T–1 *** EuTi(1-x)NbxO3(x=0.05,0.1,0.15,and 0.2)compounds with giant reversible MCE are considered as a good candidate for magnetic refrigerant working at lowtemperature and low-field.