Effects of magnetic field and hydrostatic pressure on the antiferromagnetic-ferromagnetic transition and magneto-functional properties in Hf_(1-x)Ta_(x)Fe_(2)alloys  

作　　者：Feng-Hua Chen Hai-Bo Xie Ming-Shuai Huo Hui Wu Lian-Jie Li Zheng-Yi Jiang 

机构地区：[1]School of Mechanical,Materials,Mechatronic and Biomedical Engineering,University of Wollongong,Wollongong,NSW,2522,Australia [2]The Key Laboratory of Magnetic and Electric Functional Materials and Applications of Shanxi Province,Taiyuan University of Science and Technology,Taiyuan,030024,China

出　　处：《Tungsten》2023年第4期503-511,共9页钨科技（英文）

基　　金：financially by the School of Mechanical,Materials,Mechatronic and Biomedical Engineering,University of Wollongong,Australia;The China Scholarship Council(No.201808140031);The Emerging Industry Leadership Talent Program of Shanxi Province(No.2019042);Scientific and Technological Innovation Projects for Excellent Researchers of Shanxi Province(No.201805D211042)。

摘　　要：In this study,the thermal expansion of Hf_(1-x)Ta_(x)Fe_(2)(x=0.10,0.13,0.15)compounds by adjusting the Ta concentration was successfully regulated.The magnetocaloric properties,hydrostatic pressure affecting the antiferromagnetic-ferromagnetic transition,and magnetostriction in the low magnetic field were studied.TheΔS_(M)values of 3.3 J·(kg-K)^(-1)and 3.6 J·(kg·K)^(-1)were obtained under magnetic fields of 10 kOe and 15 kOe in the Hf_(0.85)Ta_(0.15)Fe_(2),respectively.In the antiferromagnetic-ferromagnetic state transformation process under hydrostatic pressure up to 0.8 GPa,the state temperature does not decrease in a strictly linear manner.Outstanding magnetostrictive properties of 0.12%were obtained at a magnetic field of 10 kOe.This kind of alloy is supposed to be controlled under hydrostatic pressure to obtain good magnetic refrigeration performance and magnetostrictive properties.

关 键 词：Magnetoelastic transition Magnetocaloric effect Hydrostatic pressure Hf1-xTaxFe2 compounds MAGNETOSTRICTION 

分 类 号：TB64[一般工业技术—制冷工程]