Large magnetocaloric effect and magnetoresistance in ErNi single crystal

Xuanwei Zhao ¹Xianming Zheng ¹Xiaohua Luo ²Fei Gao ³Hai Zeng ¹Guang Yu ¹Sajjad Ur Rehman ⁴Changcai Chen ²Shengcan Ma ²Weijun Ren ⁵Zhenchen Zhong⁴

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作者信息

1. Jiangxi Key Laboratory for Rare Earth Magnetic Materials and Devices,College of Rare earths,Jiangxi University of Science and Technology,Ganzhou 341000,People's Republic of China;Ganzhou Key Laboratory for Rare Earth Magnetic Functional Materials and Physics,College of Rare earths,Jiangxi University of Science and Technology,Ganzhou 341000,People's Republic of China;School of Materials Science and Engineering,Faculty of Materials Metallurgy and Chemistry,Jiangxi University of Science and Technology,Ganzhou
2. Jiangxi Key Laboratory for Rare Earth Magnetic Materials and Devices,College of Rare earths,Jiangxi University of Science and Technology,Ganzhou 341000,People's Republic of China;Ganzhou Key Laboratory for Rare Earth Magnetic Functional Materials and Physics,College of Rare earths,Jiangxi University of Science and Technology,Ganzhou 341000,People's Republic of China
3. Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,People's Republic of China;Key Laboratory of Electromagnetic Processing of Materials,Northeastern University,Shenyang,110819,People's Republic of China
4. Jiangxi Key Laboratory for Rare Earth Magnetic Materials and Devices,College of Rare earths,Jiangxi University of Science and Technology,Ganzhou 341000,People's Republic of China
5. Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,People's Republic of China
折叠

Abstract

The magnetic properties,magnetocaloric effect and magnetoresistance in ErNi single crystal have been investigated in detail.With decreasing temperature,ErNi single crystal undergoes two successive mag-netic transitions:a paramagnetic to ferromagnetic transition at Tc=11 K and a spin-reorientation transition at TSR=5 K.Meanwhile,a sharp field-induced metamagnetic transition is observed below the Tc along the a axis.ErNi single crystal possesses a giant magnetocaloric effect around Tc.The maximum magnetic entropy change is-36.1 J(kg K)-1 along the a axis under the field change of 0-50 kOe.In par-ticular,the rotating magnetocaloric effect in ErNi single crystal reaches its maximum under a relatively low field,and the maximum rotating entropy change with a value of 9.3 J(kg K)-1 is obtained by rotat-ing the applied field from the[011]to[100]directions under 13 kOe.These results suggest that ErNi could be a promising candidate for magnetic refrigeration working at liquid-helium temperature region.Moreover,a complicated transport behavior is uncovered in ErNi single crystal,which is attributed to the complex magnetic states and magnetic polaronic effect.Both positive and negative magnetoresistance are observed.A considerable large magnetoresistance with the value of-34.5％is acquired at 8 K under 50 kOe when the field is along the[100]direction.

Key words

Rare-earth transition-metal intermetallics/Magnetic refrigeration/Magnetocaloric effect/Magnetocrystalline anisotropy/Magnetoresistance

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基金项目

This work was financially supported by the Natural Science Foundation of Jiangxi Province(20202BAB214002)

Jiangxi Provincial Education Department's Research Project of Science and Technology(GJJ190484)

Scientific Research Start-up Foun-dation of Jiangxi University of Science and Technology(Grant 3401223366)

National Natural Science Foundation of China(Nos.52061014)

National Natural Science Foundation of China(51671097)

National Natural Science Foundation of China(52071323)

Ganzhou Science and Technology Innovation Talent Plan(3208000033)

Key Project of Natural Science Foundation of Jiangxi Province(20192ACB20004)

and the Graduate Student Innovation Special Funds Project of Jiangxi Province(YC2019-S303)

出版年

2021

材料科学技术(英文版)

中国金属学会中国材料研究学会中国科学院金属研究所

材料科学技术(英文版)

CSTPCDCSCDSCI

影响因子：0.657

ISSN：1005-0302

参考文献量52

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