中国科学:物理学 力学 天文学(英文版)2024，Vol.67Issue(2) ：134-141.DOI:10.1007/s11433-023-2238-2

Theoretical study on magnetocaloric effect and its electric-field regulation in CrI3/metal heterostructure

Weiwei He Ziming Tang Qihua Gong Min Yi Wanlin Guo
中国科学:物理学 力学 天文学(英文版)2024，Vol.67Issue(2) ：134-141.DOI:10.1007/s11433-023-2238-2
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Theoretical study on magnetocaloric effect and its electric-field regulation in CrI3/metal heterostructure

Weiwei He 1Ziming Tang 1Qihua Gong 2Min Yi 1Wanlin Guo1
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作者信息

  • 1. State Key Laboratory of Mechanics and Control for Aerospace Structures,Key Laboratory for Intelligent Nano Materials and Devices of Ministry of Education,Institute for Frontier Science,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China
  • 2. State Key Laboratory of Mechanics and Control for Aerospace Structures,Key Laboratory for Intelligent Nano Materials and Devices of Ministry of Education,Institute for Frontier Science,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;MIIT Key Laboratory of Aerospace Information Materials and Physics,College of Physics,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China
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Abstract

The extraordinary properties of a heterostructure by stacking atom-thick van der Waals(vdW)magnets have been extensively studied.However,the magnetocaloric effect(MCE)of heterostructures that are based on monolayer magnets remains to be ex-plored.Herein,we deliberate MCE of vdW heterostructure composed of a monolayer CrI3 and metal atomic layers(Ag,Hf,Au,and Pb).It is revealed that heterostructure engineering by introducing metal substrate can improve MCE of CrI3,particularly boosting relative cooling power to 471.72 μJ m-2 and adiabatic temperature change to 2.1 K at 5 T for CrI3/Hf.This improved MCE is ascribed to the enhancement of magnetic moment and intralayer exchange coupling in CrI3 due to the CrI3/metal het-erointerface induced charge transfer.Electric field is further found to tune MCE of CrI3 in heterostructures and could shift the peak temperature by around 10 K in CrI3/Hf,thus manipulating the working temperature window of MCE.These theoretical results could enrich the research on low-dimensional magnetocaloric materials.

Key words

magnetocaloric effect/heterostructure/metal substrate

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基金项目

the.National Natural Science Foundation of China(12272173)

the.National Natural Science Foundation of China(12302134)

the.National Natural Science Foundation of China(11902150)

Fundamental Research Funds for the Central Universities(NS2023054)

National Overseas Youth Talents Program,the Research Fund of State Key Laboratory of Mechanics and Control for Aerospace Str(MCMS-I-0419G01)

National Overseas Youth Talents Program,the Research Fund of State Key Laboratory of Mechanics and Control for Aerospace Str(MCMS-I-0421K01)

Priority Academic Program Development of Jiangsu Higher Education Institutions()

Interdisciplinary Innovation Fund for Doctoral Students of Nanjing University of Aeronautics and Astronautics(KXKCXJJ202306)

High Performance Computing Platform of Nanjing University of Aeronautics and Astronautics()

出版年

2024
中国科学:物理学 力学 天文学(英文版)
中国科学院

中国科学:物理学 力学 天文学(英文版)

CSTPCD
影响因子：0.91
ISSN：1674-7348
参考文献量67
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