Tunable magnetostructural phase transition and magnetocaloric effect in the (MnNiSi)1-x(Co2Ga)x system

被引：0

作者：

Jiang, Lina ^{[1
,2
]}

Hu, Cuicui ^{[1
,2
]}

Chen, Haifeng ^{[1
,3
]}

Xia, Zilu ^{[1
,4
]}

Chen, Yang ^{[1
,5
]}

Tang, Fang ^{[1
,5
]}

Fang, Yong ^{[1
]}

Qian, Bin ^{[1
]}

Xuan, Haicheng ^{[2
]}

Han, Zhida ^{[1
]}

机构：

[1] Changshu Inst Technol, Sch Phys & Elect Engn, Jiangsu Lab Adv Funct Mat, Changshu 215500, Peoples R China

[2] Taiyuan Univ Technol, Coll Mat Sci & Engn, Taiyuan 030024, Peoples R China

[3] Suzhou Univ Sci & Technol, Jiangsu Prov Higher Educ Inst, Sch Phys Sci & Technol, Key Lab Efficient Low carbon Energy Convers & Util, Suzhou 215009, Peoples R China

[4] Yangzhou Univ, Coll Phys Sci & Technol, Yangzhou 225002, Peoples R China

[5] Soochow Univ, Sch Phys Sci & Technol, Jiangsu Key Lab Thin Films, Suzhou 215006, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2025年 / 1021卷

基金：

中国国家自然科学基金;

关键词：

Magnetocaloric effect; (MnNiSi)1-x(Co2Ga)x system; Three-site substitution; Magnetostructural transition; ENTROPY CHANGE; GIANT; HYSTERESIS; ALLOYS;

D O I：

10.1016/j.jallcom.2025.179579

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

This work systematically investigates the magnetic properties and magnetocaloric effect (MCE) of the (MnNiSi)1x(Co2Ga)x system. The synergistic three-site substitution of Ga and Co elements into the MnNiSi-based system reduced the structural transition temperature by approximately 1000 K. A Curie temperature window of 160 K spanning across room temperature was established in the (MnNiSi)1-x(Co2Ga)x system, enabling the coupling of magnetism and structure during the transition between the low-temperature ferromagnetic orthorhombic phase and the high-temperature paramagnetic hexagonal phase. This resulted in a tunable martensitic phase transition with a large MCE. The study demonstrates the (MnNiSi)1-x(Co2Ga)x system exhibits great potential for adjustable magnetostructural transitions and applications in magnetic refrigeration near room temperature.

引用

页数：7

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