Giant enhancement of the magnetocaloric response in Ni-Co-Mn-Ti by rapid solidification

被引：91

作者：

Bez, Henrique Neves ^{[1
]}

Pathak, Arjun K. ^{[2
]}

Biswas, Anis ^{[2
]}

Zarkevich, Nikolai ^{[2
]}

Balema, Viktor ^{[2
]}

Mudryk, Yaroslav ^{[2
]}

Johnson, Duane D. ^{[3
]}

Pecharsky, Vitalij K. ^{[3
]}

机构：

[1] Univ Fed Santa Catarina, Dept Mech Engn, Polo Res Labs Emerging Technol Cooling & Thermoph, Florianopolis, SC 88040, Brazil

[2] US DOE, Ames Lab, Ames, IA 50011 USA

[3] Iowa State Univ, Mat Sci & Engn, Ames, IA 50011 USA

来源：

ACTA MATERIALIA | 2019年 / 173卷

关键词：

Multicaloric; Magnetocaloric; Shape memory; Magnetic refrigeration; INITIO MOLECULAR-DYNAMICS; REFRIGERATION; PERFORMANCE; TRANSITION; BULK;

D O I：

10.1016/j.actamat.2019.05.004

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetocaloric refrigeration is a solid-state cooling approach that promises high energy efficiency and low environmental impact. It remains uncompetitive with conventional vapor-compression technologies due to lack of high-performing materials that exhibit large magnetocaloric effects in low magnetic fields. Here we report a game-changing enhancement of the magnetocaloric response in a transition-metal based Ni-Co-Mn-Ti. Mechanically and chemically stable rapidly solidified ribbons exhibit magnetic entropy changes as high as similar to 27 j.kg(-1)K(-1) for a moderate field change of 2 T, comparable to or larger than the best known materials for near -room temperature applications. The ribbons can be easily manufactured in large quantities and the transition temperature can be adjusted by varying Co concentration. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：225 / 230

页数：6