Fe doping effect on EuTiO3: The magnetic properties and giant magnetocaloric effect |
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| Authors: | Wei Zhang Zhao-Jun Mo ZhiHong Hao Jun Shen Jia-Wei Luo Rui-Jiang Chang Lan Li |
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| Affiliation: | 1. School of Material Science and Engineering, National Demonstration Center for Experimental Function Materials Education, Key Laboratory of Display Materials and Photoelectric Devices of Ministry of Education, Key Laboratory for Optoelectronic Materials and Devices of Tianjin, Tianjin University of Technology, Tianjin, China;2. Tianjin Vocational Institute, Tianjin, China;3. Key laboratory of cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China |
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| Abstract: | The magnetic properties and magnetocaloric effect for EuTi1-xFexO3 (x = 0.05, 0.1) compounds are investigated. When a part of Ti4+ions were substituted by Fe ions, the AFM ordering can be significantly changed to be FM. The EuTi1-xFexO3 (x = 0.05, 0.1) compounds exhibit a PM to FM transition with decreasing temperature and the Curie temperature is 6 K. Under the field changes of 1 T,  and RC are valued to be 10.1 J/kg K and 50.2 J/kg for EuTi0.95Fe0.05O3; 9.6 J/kg K and 47.7 J/kg for EuTi0.9Fe0.1O3, without magnetic and thermal hysteresis. RC is almost twice as much as EuTiO3 (27 J/kg) as substitution of Fe3+ ions for Ti4+ions, which may be attributed to the magnetic transition (AFM to FM). Therefore, the giant  and large RC suggest the EuTi1-xFexO3 compounds are good materials for magnetic refrigerant. |
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| Keywords: | magnetic entropy change magnetic phase transformation magnetocaloric effect |
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