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Updated: Jul 9, 2025

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
Published on: June 7, 2018
Mechanism for Improved Curie Temperature and Magnetic Entropy Change in Sm-Doped Fe88Zr8B4 Amorphous Alloys
Zhe-Rui Zhang1, Xiang-Jie Liu1, He-Teng Zhang1
1Institute of Materials & Laboratory for Microstructure, Shanghai University, Shanghai 200072, China.
Abstract:
In the present work, Fe88Zr8-xSmxB4 (x = 2, 4) amorphous alloys (AAs) were successfully synthesized into the shape of 40-micrometer-thick ribbons and their magnetic properties were measured. The Fe88Zr8-xSmxB4 (x = 2, 4) AAs exhibited a rather high maximum magnetic entropy change (-ΔS): ~3.53 J/(K × kg) near 317 K for x = 2 and ~3.79 J/(K × kg) near 348 K for x = 4 under 5 T. The effects of a Sm substitution for Zr on the Curie temperature (T) and -ΔS were studied and compared to those of Nd and Pr substitutions, for the purpose of revealing the mechanism involved in more detail.
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