Enhanced Curie temperature and cooling efficiency in melt-extracted Gd50(Co69.25Fe4.25Si13B13.5)50 microwires

JOURNAL OF ALLOYS AND COMPOUNDS

卷:708

Article

Bao, Ying^1,3  Shen, Hongxian^1,2  Xing, Dawei¹  Jiang, Sida¹  Sun, Jianfei¹  Phan, Manh-Huong² 

[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China

[2] Univ S Florida, Dept Phys, Tampa, FL 33620 USA

[3] Harbin Univ Sci & Technol, Sch Mat Sci & Engn, Harbin 150000, Peoples R China

关键词: Melt-extraction;    Microwire;    Magnetocaloric effect;    Magnetic refrigeration;   

DOI  :  10.1016/j.jallcom.2017.03.071

来源: Elsevier

【 摘 要 】

We report enhancements of both Curie temperature and magnetic refrigerant capacity in Gd-50(Co69.25Fe4.25Si13B13.5)(50) microwires, which were fabricated by the melt-extraction method. For a field change of 5 T, the maximum magnetic entropy change (Delta S-M(max)), the refrigerant capacity (RC) and relative cooling power (RCP) reached high values of 6.56 J kg(-1) K-1, 625 J kg(-1) and 826 J kg(-1), respectively. While the RC is similar to those of our previously reported GdAlCo microwires, a much broader working temperature range of similar to 126 K and a higher Curie temperature of 170 K make the Gd-50(Co69.25Fe4.25Si13B13.5)(50) microwires more attractive for active magnetic refrigeration. (C) 2017 Elsevier B.V. All rights reserved.

【 授权许可】

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