The Martensitic Transition and Magnetocaloric Effect of Mn-Poor MnCoGe Melt-Spun Ribbons

被引：1

作者：

Liu, Yao ^{[1
]}

Zhang, Ming ^{[1
]}

Hu, Fengxia ^{[1
]}

Wang, Jing ^{[1
]}

Wu, Rongrong ^{[1
]}

Zhao, Yingying ^{[1
]}

Kuang, Hao ^{[1
]}

Zuo, Wenliang ^{[1
]}

Sun, Jirong ^{[1
]}

Shen, Baogen ^{[1
]}

机构：

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

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2015年 / 51卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Magnetocaloric effect (MCE); martensitic transformation; Mn-Co-Ge ribbon; rapid quenching; MAGNETIC-PROPERTIES; TRANSFORMATION;

D O I：

10.1109/TMAG.2015.2448654

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We investigated the martensitic transition and the magnetic properties of Mn1-xCoGe melt-spun ribbons. The as-prepared Mn1-xCoGe ribbons crystallize in austenite hexagonal phase with a textured structure. The postannealing process promotes the formation of the martensitic phase and homogenization of the alloy, resulting in a first-order magnetostructural transition in the annealed ribbons, and thus a giant magnetocaloric effect. The magnetic entropy change around the transition reaches 19 J/kgK for a magnetic field change of 0-5 T. Furthermore, it is found that the hysteresis loss around the magnetostructural transition is negligible in present annealed ribbons, which would facilitate the application of Mn1-xCoGe alloys.

引用

页数：4

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