Transversal magneto-resistance in epitaxial Fe3O4 and Fe3O4/NiO exchange biased system

被引：18
|
作者：
Wu, Han-Chun [1 ,2 ]
Ramos, R. [1 ,2 ]
Sofin, R. G. S. [1 ,2 ]
Liao, Zhi-Min [3 ]
Abid, M. [4 ]
Shvets, I. V. [1 ,2 ]
机构：
[1] Trinity Coll Dublin, CRANN, Dublin 2, Ireland
[2] Trinity Coll Dublin, Sch Phys, Dublin 2, Ireland
[3] Peking Univ, Dept Phys, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China
[4] Ecole Polytech Fed Lausanne, IPMC, LPMN, Stn 3, CH-1015 Lausanne, Switzerland
来源：
APPLIED PHYSICS LETTERS | 2012年 / 101卷 / 05期
基金：
爱尔兰科学基金会;
关键词：
GIANT MAGNETORESISTANCE; PLANAR; ANISOTROPY; MAGNETITE; MGO(001);
D O I：
10.1063/1.4739951
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have investigated transversal magneto-resistance (MR) in epitaxial Fe3O4 and Fe3O4/NiO exchange biased systems. It was found that the magnetic field dependence and the magnitude of the transversal MR in both systems strongly depend on the bias current density which suggests that the transversal MR in metal oxide with anti-phase boundaries (APBs) cannot be described by the conventional transversal MR for a single magnetic domain. The effect of electron scattering at the APBs may have to be considered. Angular dependence of the transversal MR at low temperature further indicates that the current explanation of the origin of transversal MR on the basis of anisotropic MR alone may not be sufficient for a system experiencing charge ordering. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4739951]
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页数：5
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