Structural characterization of Co100−xFex nano-oxide layer
Structural characterization of Co100−xFex nano-oxide layer
复制标题
Co100−xFex 纳米氧化物层的结构表征
DOI：
10.1063/1.2165591
复制
发表时间：
2006
影响因子：
3.2
通讯作者：
M. Sahashi
中科院分区：
文献类型：
--
作者：
H. Endo;M. Doi;N. Hasegawa;M. Sahashi
为了表征Co 100 −xFex纳米氧化物层（NOL）的结构，研究了镜面自旋阀（SPSV）系统中Co 100 − xFex-自然氧化NOL的交换偏置特性。对于Co 100 −xFex-NOL，交换偏置能（Jex）随着Fe含量的增加而单调增加。通过增加Co 100 −xFex-NOL中的Fe含量，实现了磁阻比和交换偏置场（Hex）的增强。在NOL-SPSV中插入Co_（30）Fe_（70）-NOL也能获得大于800 Oe的Hex钉扎场，这比IrMn-SV的钉扎场高得多。这种高交换偏置场被认为是通过在IrMn界面处形成富Fe的fcc相来实现的。
For the structural characterization of a Co100−xFex nano-oxide layer (NOL), the exchange bias properties of the Co100−xFex-natural oxidized NOL in the specular spin-valve (SPSV) system were investigated. The exchange bias energy (Jex) increased monotonically with the increasing Fe content for the Co100−xFex-NOL. The enhancement of both the magnetoresistance ratio and the exchange bias field (Hex) was realized by increasing the Fe content in the Co100−xFex-NOL. It should be mentioned that Hex more than 800Oe is obtained by the insertion of Co30Fe70-NOL, even in NOL-SPSV, which is a remarkably higher pinning field than that ever reported on IrMn-SV. This high exchange bias field is considered to be realized by the formation of an Fe-rich fcc phase at the interface of IrMn.