Magnetocaloric response and its power law relationship with magnetoresistance in Er-Tm-Co-Al metallic glasses

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• 作者：Xinghui Kou ; Qiang Luo ; ^{zf17lq@sina.com} ; Phuong Nguyen Dinh ; Jun Shen ; ^{junshen@tongji.edu.cn}
• 关键词：Metallic glasses ; Magnetic properties ; Magnetocaloric effect ; Magnetoresistance
• 刊名：Journal of Alloys and Compounds
• 出版年：2017
• 出版时间：30 March 2017
• 年：2017
• 卷：699
• 期：Complete
• 页码：591-595
• 全文大小：682 K
• 卷排序：699

文摘

The maximum magnetic entropy change (|ΔSm|) of Er32Tm24Co24Al20 metallic glasses (MGs) can reach 17.0 J/kgK under a field change of 5 T, which is larger than most previous amorphous alloys reported. It is found that magnetoresistance (MR) and –ΔSm obey a power law relationship around and below the magnetic ordering temperature: MR%µ |–ΔSm|c, in which c is field dependent. Below the magnetic ordering temperature, the magnitude of MR shows H2 dependence, which is similar but different from the Hndependence of –ΔSm (n smaller than 1).