A switch-like magnetoresistance of ferromagnetic Ni-Mn-Ga ribbon during martensitic transformation

Authors

Fenghua Chen, University of WollongongFollow
Qingxue Huang, Taiyuan University of Science and Technology
Zhengyi Jiang, University of WollongongFollow
Mingang Zhang, Taiyuan University of Science and Technology
Xiaohong Xu, Shanxi Normal University
Qingmei Zhang, Taiyuan University of Science and Technology
Jingwei Zhao, University of WollongongFollow

RIS ID

102590

Publication Details

Chen, F., Huang, Q., Jiang, Z., Zhang, M., Xu, X., Zhang, Q. & Zhao, J. (2015). A switch-like magnetoresistance of ferromagnetic Ni-Mn-Ga ribbon during martensitic transformation. Materials Letters, 160 428-431.

Abstract

The Ni₅₃Mn_23.5Ga_23.5 ribbon was fabricated by a process of melt-spinning. The structure and magnetic properties of the as-spun and annealed ribbons were investigated. The magnetoresistance (MR) was evaluated at the magnetic field up to 30 kOe. A switch-like (negative and positive) MR (about 2%) obtained at a martensitic transformation (MT). Due to the lattice instability and magnetocrystalline anisotropy, the highly textured Ni₅₃Mn_23.5Ga_23.5 melt spun ribbons may be broadly applied in magnetic memory applications, also as a temperature and the magnetic sensor.