Demonstration of magnetoelectric effect in ultrathin Cr2O3/Fe2O3 nano-oxide layer by training effect
Demonstration of magnetoelectric effect in ultrathin Cr2O3/Fe2O3 nano-oxide layer by training effect
复制标题
DOI：
10.1063/1.4731274
复制
发表时间：
2012-07
影响因子：
4
通讯作者：
N. Shimomura;K. Sawada;T. Nozaki;M. Doi;M. Sahashi
中科院分区：
文献类型：
--
作者：
N. Shimomura;K. Sawada;T. Nozaki;M. Doi;M. Sahashi
我们确定了磁电效应的Cr2 O3/Fe 2 O3纳米氧化物层结构（厚度约为1 nm）的表面上形成的Co0.9Fe0.1金属层通过调查培训效果作为一个功能的传感电流/偏置电压和它的方向。反映表面自旋变化的系统相关常数κMR随钉扎（反向钉扎）方向上电流的增加而增加（减少）。此外，尽管极薄，但κMR随电流的变化而变化，从而表明电流有助于表面自旋的变化。结果表明，Cr_2O_3具有磁电效应。
We identified magnetoelectric effect in an ultrathin (Cr2O3/Fe2O3) nano-oxide layer structure (thickness ∼1 nm) formed on the surface of a Co0.9Fe0.1 metal layer by investigating the training effect as a function of sense current/bias voltage and its direction. A system-dependent constant κMR, which reflects changes in the surface spin, increases (decreases) with increasing current in the pinned (inverse pinned) direction. Furthermore, κMR varies for temperatures up to ∼200 K with current despite the extreme thinness, thus suggesting the current contributes to the surface spin changes. The results indicate the demonstration of the magnetoelectric effect in ultrathin Cr2O3.