Investigation on Spin Dependent Transport Properties of Core-Shell Structural Fe₃O₄/ZnS Nanocomposites for Spintronic Application

Er Liu; Honglei Yuan; Zhaoxia Kou; Xiumei Wu; Qingyu Xu; Ya Zhai; Yunxia Sui; Biao You; Jun Du; Hongru Zhai

doi:10.1038/srep11164

Investigation on Spin Dependent Transport Properties of Core-Shell Structural Fe₃O₄/ZnS Nanocomposites for Spintronic Application

Sci Rep. 2015 Jun 8:5:11164. doi: 10.1038/srep11164.

Authors

Er Liu¹, Honglei Yuan¹, Zhaoxia Kou¹, Xiumei Wu¹, Qingyu Xu¹, Ya Zhai^{1

2}, Yunxia Sui³, Biao You², Jun Du², Hongru Zhai^{2

3}

Affiliations

¹ Department of Physics, Southeast University, Nanjing 211189, China.
² National Laboratory of Solid Microstructures, Nanjing University, Nanjing 210093, China.
³ Center for Material Analysis, Nanjing University, Nanjing 210093, China.

Abstract

The core-shell structural Fe3O4/ZnS nanocomposites with controllable shell thickness were well-fabricated via seed-mediate growth method. Structural and morphological characterizations reveal the direct deposition of crystalline II-VI compound semiconductor ZnS shell layer on Fe3O4 particles. Spin dependent electrical transport is studied on Fe3O4/ZnS nanocomposites with different shell thickness, and a large magnetoresistance (MR) ratio is observed under the magnetic field of 1.0 T at room temperature and 100 K for the compacted sample by Fe3O4/ZnS nanocomposites, which is 50% larger than that of sample with pure Fe3O4 particles, indicating that the enhanced MR is contributed from the spin injection between Fe3O4 and ZnS layer.

Publication types

Research Support, Non-U.S. Gov't