Mechanism for Improved Curie Temperature and Magnetic Entropy Change in Sm-Doped Fe<sub>88</sub>Zr<sub>8</sub>B<sub>4</sub> Amorphous Alloys
Zhe-Rui Zhang,
Xiang-Jie Liu,
He-Teng Zhang,
Qiang Wang,
Ding Ding,
Ben-Zhen Tang,
Peng Yu,
Jin-Lei Yao,
Lei Xia
Affiliations
Zhe-Rui Zhang
Institute of Materials & Laboratory for Microstructure, Shanghai University, Shanghai 200072, China
Xiang-Jie Liu
Institute of Materials & Laboratory for Microstructure, Shanghai University, Shanghai 200072, China
He-Teng Zhang
Institute of Materials & Laboratory for Microstructure, Shanghai University, Shanghai 200072, China
Qiang Wang
Institute of Materials & Laboratory for Microstructure, Shanghai University, Shanghai 200072, China
Ding Ding
Institute of Materials & Laboratory for Microstructure, Shanghai University, Shanghai 200072, China
Ben-Zhen Tang
Chongqing Key Laboratory of Photo-Electric Functional Materials, College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 401331, China
Peng Yu
Chongqing Key Laboratory of Photo-Electric Functional Materials, College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 401331, China
Jin-Lei Yao
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
Lei Xia
Institute of Materials & Laboratory for Microstructure, Shanghai University, Shanghai 200072, China
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.
