Stable magnetocaloric effect over an ultrawide temperature range of 146–320 K via hydrostatic pressure in kagome magnets
Abstract
Solid-state refrigeration leveraging the magnetocaloric effect (MCE) presents a sustainable and energy-efficient alternative to traditional gas compression refrigeration technologies. However, the practical utility of most magnetocaloric materials is restricted by their narrow operational temperature window. In this work, a stable magnetocaloric effect across an ultrawide temperature range of 146–320 K was achieved in Hf0.85Ta0.15Fe2 magnet via the hydrostatic pressure manipulation. Furthermore, the underlying mechanism for the extended and stable MCEs under hydrostatic pressure has been revealed by magnetization measurements and first-principles calculations. The material systems characterized by strong spin–lattice coupling exhibit considerable potential for externally manipulated hybrid-field-tuned magnetic properties and magnetocaloric performance, providing a convenient and practical approach for advancing applications in magnetic refrigeration technologies.
Article Details
Journal Info
Applied Physics Letters
American Institute of Physics
Authors (13)
Junchao Sheng
Anhui Provincial Key Laboratory of Magnetic Functional Materials and Devices, School of Materials Science and Engineering, Anhui University Hefei 1 , Anhui 230601,
Jiawang Xu
Anhui Provincial Key Laboratory of Magnetic Functional Materials and Devices, School of Materials Science and Engineering, Anhui University Hefei 1 , Anhui 230601,
Lei Xi
Shouyuan Xing
Anhui Provincial Key Laboratory of Magnetic Functional Materials and Devices, School of Materials Science and Engineering, Anhui University Hefei 1 , Anhui 230601,
Shihao Li
Biotechnology Research Institute, Chinese Academy of Agricultural Sciences
Xucai Kan
School of Materials Science and Engineering, Anhui University 6 , Hefei 230601,
Xinqi Zheng
School of Materials Science and Engineering
He Huang
Lichen Wang
Ningbo Institute of Materials Technology & Engineering, Chinses Academy of Sciences Ningbo 3 , Zhejiang 315201,
Yuyan Han
Shiming Zhou
Hefei National Research Center for Physical Sciences at the Microscale, Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences, National Synchrotron Radiation Laboratory, Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes, Department of Chemical Physics
Baogen Shen
Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences
Shouguo Wang