Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8156821 | Journal of Magnetism and Magnetic Materials | 2014 | 5 Pages |
Abstract
This work reports on the influence of different MgO/NiFe and NiFe/MgO heterointerfaces on the transport behaviors of spin-polarized electrons. It is found that the NiFe films with MgO underneath exhibit better transport properties than those coated by an MgO layer. The MgO/NiFe interface can significantly enhance the specular reflection of spin-polarized electrons and favor the electronic transport. In contrast, a greater lattice mismatch between NiFe and MgO will emerge because of the epitaxial relationship at the NiFe(111)/MgO(111) interface, with the resultant formation of oxygen-deficient MgOx phase at the NiFe/MgO interface. Significantly diffusive scattering of conduction electrons from such vacancy defects can substantially degrade the electron transport properties.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Chong-Jun Zhao, Zheng-Long Wu, Zhi-Duo Zhao, Lei Ding, Xiang-An Lu, Xu-Jing Li, Jing-Yan Zhang, Guang-Hua Yu,