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

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

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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.

magnetocaloric effectheterostructuremetal substrate

Weiwei He、Ziming Tang、Qihua Gong、Min Yi、Wanlin Guo

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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

the.National Natural Science Foundation of Chinathe.National Natural Science Foundation of Chinathe.National Natural Science Foundation of ChinaFundamental Research Funds for the Central UniversitiesNational Overseas Youth Talents Program,the Research Fund of State Key Laboratory of Mechanics and Control for Aerospace StrNational Overseas Youth Talents Program,the Research Fund of State Key Laboratory of Mechanics and Control for Aerospace StrPriority Academic Program Development of Jiangsu Higher Education InstitutionsInterdisciplinary Innovation Fund for Doctoral Students of Nanjing University of Aeronautics and AstronauticsHigh Performance Computing Platform of Nanjing University of Aeronautics and Astronautics

122721731230213411902150NS2023054MCMS-I-0419G01MCMS-I-0421K01KXKCXJJ202306

2024

10.1007/s11433-023-2238-2

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
年,卷(期)：2024.67(2)
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