Enhanced magnetocaloric properties of melt-extracted GdAlCo metallic glass microwires

• Published in: Journal of magnetism and magnetic materials Vol. 372; pp. 23 - 26
• Main Authors: Shen, Hongxian, Wang, Huan, Jingshun, Liu, Cao, Fuyang, Qin, Faxiang, Xing, Dawei, Chen, Dongming, Liu, Yanfen, Sun, Jianfei
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.12.2014; Elsevier
• Subjects: Amorphous materials; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Entropy; Exact sciences and technology; Glass transition temperature; Isothermal magnetic entropy change; Liquid nitrogen; Magnetic properties; Magnetic properties and materials; Magnetically ordered materials: other intrinsic properties; Magnetism; Magnetocaloric effect, magnetic cooling; Melt-extraction; Metallic glass wires; Metallic glasses; Physics; Refrigerant capacity; Refrigeration; Melt-extraction; Metallic glass wires; Refrigerant capacity; Isothermal magnetic entropy change; High performance; Magnetization; XRD; Cryogenic temperature; Gadolinium alloys; Metallic glasses; Aluminium alloys; Magnetocaloric effects; Cobalt alloys; Transition element alloys; Microwire
• ISSN: 0304-8853
• DOI: 10.1016/j.jmmm.2014.07.024

Herein, we report high magnetocaloric performance of melt-extracted metallic glass Gd60Al20Co20 microwires, which exhibit a large and reversible magnetocaloric effect (MCE). The isothermal magnetic entropy change (−ΔSm) reaches as high as 10.1Jkg−1K−1 and the refrigerant capacity (RC) has a large value of 681Jkg−1 for a field change of 5T. The as-obtained Gd-based metallic glass microwires hold a great promise for multifunctional applications in MCE-based refrigeration of liquid nitrogen temperature range. •Gd60Al20Co20 metallic glass wires were fabricated by melt-extraction method.•The microwires show superior MCE performance versus its counterpart in BMGs.•The excellent result was due to the size effect and amorphous state of wires.