Effect of hydrostatic pressure on martensitic transformation and low-temperature magnetic properties in Ni45Cu5Mn35In15 Heusler alloy

被引:4
作者
Zhang, Yuanlei [1 ,2 ]
Li, Zhe [2 ]
Xu, Kun [2 ]
Kang, Yanru [2 ]
Cao, Yiming [2 ]
Qin, Ningbo [1 ,3 ]
He, Xijia [2 ]
Wei, Shengxian [2 ]
Zeng, Hui [1 ,3 ]
Jing, Chao [1 ,3 ]
机构
[1] Shanghai Univ, Dept Phys, Shanghai 200444, Peoples R China
[2] Qujing Normal Univ, Coll Phys & Elect Engn, Qujing 655011, Peoples R China
[3] Shanghai Key Lab High Temp Superconductors, Shanghai 200444, Peoples R China
基金
中国国家自然科学基金;
关键词
Heusler alloy; Hydrostatic pressure; Martensitic transformation; Exchange bias; Superparamagnetic;
D O I
10.1016/j.jmmm.2021.167835
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The effect of hydrostatic pressure on martensitic transformation (MT), superparamagnetic (SPM) and exchange bias (EB) behaviors in polycrystalline Ni45Cu5Mn35In15 has been intensively investigated by various experimental methods. The experimental results show that the studied alloy experiences a MT from the austenitic state with a L2(1)-type cubic structure to the martensitic state with a seven-layer (7 M) modulated orthorhombic structure with decreasing temperature, accompanied by a significant change in magnetization. It is found that applying hydrostatic pressure can induce the MT to occur in the higher temperature, while the Curie transition almost remains unchanged due to the suppression of ferromagnetic (FM) coupling. In addition, the applied hydrostatic pressure can suppress the EB field and coercivity of the studied alloy due to the reduction of the competition between FM and AFM interactions. This phenomenon can be attributed to the fact that the application of hydrostatic pressure reduces the size of the SPM cluster and its average magnetic moment.
引用
收藏
页数:7
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