Giant conventional and rotating magnetocaloric effects in TbScO3 single crystal

Wu, Yao-Dong ¹Duan, Wei-Wei ¹Li, Qiu-Yue ¹Geng, Wei ¹Zhang, Chao ¹Lv, Qi-Qi ¹He, Long ¹Chen, Jun-Quan ¹Hu, Xin-Yue ¹Ma, Yuan ¹Liu, Ling-Yun ¹Ma, Xiao-Hang ¹Qin, Yong-Liang ²Meng, Ying ¹Zi, Zhen-Fa¹

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作者信息

1. Hefei Normal Univ
2. Chinese Acad Sci
折叠

Abstract

Magnetocaloric effect (MCE) shows great potential in refrigeration field and especially fundamental scientific research with cooling requirement. In this work, we studied the anisotropic magnetic and magnetocaloric properties of TbScO3 single crystal, a popular substrate used for depositing epitaxial ferroelectric films. Our results indicate a strong antiferromagnetic ordering below T-N similar to 3.1 K in orthorhombic TbScO3 single crystal. Large magnetocrystalline anisotropy exists between the magnetic easy ab plane and the hard c axis, leading to a giant anisotropic MCE. In field changes of 20 and 50 kOe along the a axis, large magnetic entropy changes reach 15.25 and 23.71 J/kg K at 3 K and 7 K, respectively, while the magnetic entropy changes along the c axis are negligible. As a result, large rotating magnetic entropy changes of 15.27 and 23.63 J/kg K are obtained by rotating TbScO3 single crystal with constant fields of 20 and 50 kOe lying in the ac plane. The large anisotropic MCE of TbScO3 single crystal indicates this material as a promise refrigerant candidate for rotating magnetic refrigeration technique near the helium temperature. (C) 2021 Elsevier B.V. All rights reserved.

Key words

TbScO3 single crystal/magnetic anisotropy/rotating magnetocaloric effect/magnetic refrigeration/MAGNETIC REFRIGERATION/DY/ENTROPY/GD/HO/ER

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出版年

2022

Journal of Alloys and Compounds

EISCI

ISSN：0925-8388

被引量3

参考文献量85

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