Low-Temperature Magnetic Properties and Magnetocaloric Effect of Fe–Zr–Cu Amorphous Alloys

• Published in: Journal of low temperature physics Vol. 200; no. 1-2; pp. 51 - 61
• Main Authors: Yang, Weiming, Li, Wenyu, Wan, Chao, Huo, Juntao, Mo, Jinyong, Liu, Haishun, Shen, Baolong
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.07.2020; Springer Nature B.V
• Subjects: Amorphous alloys; Characterization and Evaluation of Materials; Condensed Matter Physics; Copper; Curie temperature; Iron; Low temperature; Low temperature physics; Magnetic Materials; Magnetic properties; Magnetism; Metallic glasses; Multifunctional materials; Physics; Physics and Astronomy; Refrigeration; Magnetic entropy change; Magnetocaloric effect; Refrigeration capacity; Fe-based amorphous alloys
• ISSN: 0022-2291; 1573-7357
• DOI: 10.1007/s10909-020-02452-z

In this work, low-temperature magnetic properties and magnetocaloric properties of Fe 91− x Zr 9 Cu x ( x  = 0.0, 0.4 and 1.0) amorphous ribbons were investigated. It was found that the Curie temperature ( T C ) of the ribbons increases with Cu content from 210 (for x  = 0) to 218 K (for x  = 0.4), and decreases to 214 K with the further of 1.0% Cu. The values of the maximum magnetic entropy change (− Δ S M ) max were found to be 2.63, 2.75 and 2.88 J kg −1  K −1 for the Fe 91− x Zr 9 Cu x ( x  = 0.0, 0.4 and 1.0) amorphous ribbons, respectively, under the field of 50 kOe. The corresponding refrigeration capacity (RC) values of the Fe 91− x Zr 9 Cu x ( x  = 0.0, 0.4 and 1.0) amorphous ribbons are 114, 121 and 120 J kg −1 , respectively. These values are comparable to those obtained for the previously studied ternary Fe-based amorphous alloys. These results demonstrate that an appropriate amount of Cu substitution can enhance the (− Δ S M ) max and RC of Fe-based amorphous alloys. These Fe-based amorphous alloys are promising for application as low-temperature magnetic refrigerants and multi-functional materials.