Effects of Sr-doping on the giant magnetocaloric effect of EuTiO₃

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• 作者：Zhao-Jun Mo^a ; ^{mzjmzj163@163.com} ; Qi-Lie Sun^c ; Chang-Hong Wang^a ; Hai-Zhen Wu^a ; Lan Li^a ; Feng-Bin Meng^c ; Cheng-Chun Tang^c ; Yun Zhao^a ; Jun Shen^b ;
• 关键词：Magnetocaloric effect ; Magnetic entropy change ; Refrigerant capacity
• 刊名：Ceramics International
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：43
• 期：2
• 页码：2083-2088
• 全文大小：1005 K
• 卷排序：43

文摘

The magnetic properties and magnetocaloric effect of Eu1−xSrxTiO3 (x=0–0.1) compounds are investigated. With slight Sr-doping, the ferromagnetic (FM) coupling significantly increased and FM exchange is dominant in the delicate balance. A giant reversible magnetocaloric effect (MCE) and large refrigerant capacity (RC) for Eu1−xSrxTiO3 compounds were observed. The values of −ΔSMmax are evaluated to be around 10 J/kg K under a magnetic field change of 1 T and 21 J/kg K under a magnetic field change of 2 T, respectively. But, the values of RC are increased with the more Eu in EuTiO3 to be substituted by Sr. Therefore, the giant reversible MCE and large RC make the Eu1−xSrxTiO3 compound a good candidate for magnetic refrigerant working at low-temperature and low-field.