Influence of Covalent Element B and Si Addition on Magnetocaloric Properties of Gd-Co-Fe-(B,Si) Amorphous Alloys

Metals

Huiyan Zhang¹  Weihuo Li¹  Hailing Li¹  Ailin Xia¹  Ziyang Zhang²  Jia Tan²  Hui Peng²  Xue Zhang²  Xinji Xiang²  Yafang Xu² 

[1] Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials, Anhui University of Technology, Ma’anshan 243002, China;School of Materials Science and Engineering, Anhui University of Technology, Ma’anshan 243002, China;

关键词: Gd-Co-Fe amorphous alloy;    covalent element addition;    magnetocaloric performance;    magnetic refrigeration;   

DOI  :  10.3390/met12030386

来源: DOAJ

【 摘 要 】

The effect of covalent element addition on the magnetic and magnetocaloric properties of ferrimagnetic Gd₆₀Co₂₀Fe₂₀ amorphous alloy was studied. Particularly, the co-doping of B and Si promoted the magnetocaloric performance (with a larger magnetic entropy change |ΔS_M| at higher working temperature) of the initial Gd₆₀Co₂₀Fe₂₀ amorphous alloy. This is possibly ascribed to the modified magnetic transition behavior. Additionally, the broadened magnetocaloric effect with |ΔS_M| of 2.25 J kg⁻¹ K⁻¹ at 222.5 K under a magnetic field change of 0–2 T and high relative cooling power of 396.0 J kg⁻¹ were obtained for (Gd_0.6Co_0.2Fe_0.2)₉₅B₂Si₃. These properties reveal that the material could be a good candidate as a magnetic refrigerant suitable for active magnetic refrigerators.

【 授权许可】

Unknown