Low-pressure-induced giant barocaloric effect in an all-d-metal Heusler Ni35.5Co14.5Mn35Ti15 magnetic shape memory alloy

被引：84

作者：

Wei, Zhiyang ^{[1
,2
,3
]}

Shen, Yi ^{[1
,2
,3
]}

Zhang, Zhe ^{[4
,5
]}

Guo, Jianping ^{[1
,2
]}

Li, Bing ^{[4
,5
]}

Liu, Enke ^{[6
]}

Zhang, Zhidong ^{[4
,5
]}

Liu, Jian ^{[1
,2
,3
,7
]}

机构：

[1] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, CAS Key Lab Magnet Mat & Devices, Ningbo 315201, Peoples R China

[2] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Zhejiang Prov Key Lab Magnet Mat & Applicat Techn, Ningbo 315201, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[4] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab SYNL Mat Sci, Shenyang 110016, Peoples R China

[5] Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei, Peoples R China

[6] Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, State Key Lab Magnetism, Beijing 100190, Peoples R China

[7] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China

来源：

APL MATERIALS | 2020年 / 8卷 / 05期

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

ENTROPY CHANGE; TRANSFORMATION; FIELD; TRANSITION;

D O I：

10.1063/5.0005021

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The clean and energy-efficient solid-state refrigeration based on magnetostructural phase transformation is a promising alternative technology for vapor-compression refrigeration. Herein, using a unique quasi-direct calorimetric method in a high hydrostatic pressure condition, we have studied the barocaloric effect for a Ni35.5Co14.5Mn35Ti15 all-d-metal Heusler alloy that undergoes a martensitic transformation accompanied by a large magnetization change. The martensitic transformation is found to be sensitive to either applied pressure or magnetic field with the large transformation temperature driving rates of 5.8 K kbar(-1) and 2.0 K T-1. Such a sensitive response to external stimuli originates from the large lattice/volume- and magnetization-discontinuity on the phase transformation. The Ni35.5Co14.5Mn35Ti15 alloy exhibits a large barocaloric effect with an isothermal entropy change of -24.2 J kg(-1) K(-1)and an adiabatic temperature change of 4.2 K, concomitant with a relatively low pressure change of 1 kbar, appearing to be the largest values among those of reported magnetic shape memory alloys. Moreover, by virtue of the strong magnetostructural coupling in the Ni35.5Co14.5Mn35Ti15 alloy, we propose a strategy of applying/releasing pressure and magnetic field in a proper sequence to eliminate the hysteresis and effectively enhance the reproducibility of the barocaloric effect.

引用

页数：9

共 63 条

[31] Magnetic-field-induced metamagnetic reverse martensitic transformation and magnetocaloric effect in all-d-metal Ni36.0Co14.0Mn35.7Ti14.3 alloy ribbons [J].