Simultaneous optimization of entropy changes and thermal hysteresis barocaloric compound of Mn3Pt

doi:10.1016/j.intermet.2024.108558

IMR OpenIR

	Simultaneous optimization of entropy changes and thermal hysteresis barocaloric compound of Mn3Pt
	Zhao, Xueting 1,2; Zhang, Kun 1,2; Liu, Peng 1,2; Guo, Qing 1,2; Wang, Haoyu 1,2; Feng, Yuanwen 1,2; Li, Bing 1,2
通讯作者	Zhang, Kun(kzhang@imr.ac.cn) ; Li, Bing(bingli@imr.ac.cn)
	2025
发表期刊	INTERMETALLICS
ISSN	0966-9795
卷号	176 页码:6
摘要	Mn3Pt metal compounds are promising candidates for barocaloric cooling applications for their high thermal conductivity and pressure sensitivity. However, they are constrained by low entropy change and large thermal hysteresis. This study investigates the effects of doping with carbon (C) and nitrogen (N) and substituting with germanium (Ge) on the structure, as well as the thermal and barocaloric effects of Mn3Pt. We found that N and C doping significantly reduces the phase transition temperature and improves pressure sensitivity, although at the cost of reduced entropy change. In contrast, Ge substitution increases the phase transition temperature and enhances the entropy change by 123 %, with Mn 3 Pt 0.8 Ge 0.2 achieving a maximum entropy change of 22.7 J kg- 1 K- 1 . Additionally, defects were introduced to reduce the phase transition nucleation driving force, thereby lowering the thermal hysteresis to 4 K. This work provides a strategy for the simultaneous optimization of entropy change and thermal hysteresis, advancing the development of efficient and tunable barocaloric materials.
关键词	Barocaloric Doping First-order phase transition Entropy change
资助者	Key Research Program of Frontier Sciences of Chinese Academy of Sciences ; CSNS Con-sortium on High-performance Materials of Chinese Academy of Sci-ences ; Young Innovation Talent Program of Shenyang ; Ministry of Science and Technology of China ; Na-tional Natural Science Foundation of China ; International Partner Program of Chinese Academy of Sciences
DOI	10.1016/j.intermet.2024.108558
收录类别	SCI
语种	英语
资助项目	Key Research Program of Frontier Sciences of Chinese Academy of Sciences[100500003] ; CSNS Con-sortium on High-performance Materials of Chinese Academy of Sci-ences[ZDBS-LY-JSC002] ; Young Innovation Talent Program of Shenyang[RC210432] ; Ministry of Science and Technology of China ; Na-tional Natural Science Foundation of China[2021YFB3501201] ; Na-tional Natural Science Foundation of China[2022YFE0109900] ; Na-tional Natural Science Foundation of China[2020YFA0406002] ; International Partner Program of Chinese Academy of Sciences[52425107] ; International Partner Program of Chinese Academy of Sciences[52201029] ; International Partner Program of Chinese Academy of Sciences[52001101] ; [174321KYSB20200008]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001355082300001
出版者	ELSEVIER SCI LTD
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/191433
专题	中国科学院金属研究所
通讯作者	Zhang, Kun; Li, Bing
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Zhao, Xueting,Zhang, Kun,Liu, Peng,et al. Simultaneous optimization of entropy changes and thermal hysteresis barocaloric compound of Mn3Pt[J]. INTERMETALLICS,2025,176:6.
APA	Zhao, Xueting.,Zhang, Kun.,Liu, Peng.,Guo, Qing.,Wang, Haoyu.,...&Li, Bing.(2025).Simultaneous optimization of entropy changes and thermal hysteresis barocaloric compound of Mn3Pt.INTERMETALLICS,176,6.
MLA	Zhao, Xueting,et al."Simultaneous optimization of entropy changes and thermal hysteresis barocaloric compound of Mn3Pt".INTERMETALLICS 176(2025):6.