Mechanism for Improved Curie Temperature and Magnetic Entropy Change in Sm-Doped Fe88Zr8B4 Amorphous Alloys

Author:

Zhang Zhe-Rui1,Liu Xiang-Jie1,Zhang He-Teng1,Wang Qiang1ORCID,Ding Ding1ORCID,Tang Ben-Zhen2,Yu Peng2ORCID,Yao Jin-Lei3,Xia Lei1ORCID

Affiliation:

1. Institute of Materials & Laboratory for Microstructure, Shanghai University, Shanghai 200072, China

2. Chongqing Key Laboratory of Photo-Electric Functional Materials, College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 401331, China

3. Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Physical Science and Technology, Suzhou University of Science and Technology, Suzhou 215009, 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 (−ΔSmpeak): ~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 (Tc) and −ΔSmpeak were studied and compared to those of Nd and Pr substitutions, for the purpose of revealing the mechanism involved in more detail.

Funder

National Natural Science Foundation of China

Publisher

MDPI AG

Subject

General Materials Science

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