Strain-mediated electric-field control of exchange bias in a Co90Fe10/BiFeO3/SrRuO3/PMN-PT heterostructure.

Strain-mediated electric-field control of exchange bias in a Co90Fe10/BiFeO3/SrRuO3/PMN-PT heterostructure.
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Co90Fe10/BiFeO3/SrRuO3/PMN-PT 异质结构中交换偏压的应变介导电场控制

DOI:
10.1038/srep08905
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发表时间:
2015-03-10
期刊:
影响因子:
4.6
通讯作者:
Jiang Y
Jiang Y
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Wu SZ;Miao J;Xu XG;Yan W;Reeve R;Zhang XH;Jiang Y

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研究了Co90Fe10/BiFeO3(BFO)/SrRuO3/PMN-PT异质结构在不同拉伸应变状态下的电场控制交换偏置(EB)。在PMN-PT基底上施加外加电场,BFO薄膜的面内拉伸应变由+0.52%变化为+0.43%。在非挥发性菌株的控制下,EB发生了明显的变化。在没有磁场的情况下,观察到由电场驱动的磁化反转。结果表明,在室温条件下,通过应变调制的多铁BFO对铁磁层进行可逆的非易失性电场控制是可行的。
The electric-field (E-field) controlled exchange bias (EB) in a Co90Fe10/BiFeO3(BFO)/SrRuO3/PMN-PT heterostructure has been investigated under different tensile strain states. The in-plane tensile strain of the BFO film is changed from +0.52% to +0.43% as a result of external E-field applied to the PMN-PT substrate. An obvious change of EB by the control of non-volatile strain has been observed. A magnetization reversal driven by E-field has been observed in the absence of magnetic field. Our results indicate that a reversible non-volatile E-field control of a ferromagnetic layer through strain modulated multiferroic BFO could be achieved at room temperature.
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