Magnetic-field-induced electric polarization in multiferroic nanostructures
Magnetic-field-induced electric polarization in multiferroic nanostructures
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DOI：
10.1103/physrevlett.94.197203
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发表时间：
2005-05-20
影响因子：
8.6
通讯作者：
Chen, HD
中科院分区：
文献类型：
--
作者：
Nan, CW;Liu, G;Chen, HD
利用绿色函数方法研究了纳米结构多铁性复合薄膜的磁致极化。计算结果表明，由于弹性耦合作用的增强，在多铁性纳米结构中可以产生较大的磁场诱导极化。特别是，铁磁纳米柱嵌入铁电基体的1-3型薄膜表现出较大的磁致极化响应，而铁电和铁磁纳米叠层的2-2型薄膜由于较大的面内约束效应，表现出较弱的磁电耦合和较低的磁致极化响应，这与最近的观察结果一致.
Magnetic-field-induced electric polarization in nanostructured multiferroic composite films was studied by using the Green's function approach. The calculations showed that large magnetic-field-induced polarization could be produced in multiferroic nanostructures due to enhanced elastic coupling interaction. Especially, the 1-3 type films with ferromagnetic nanopillars embedded in a ferroelectric matrix exhibited large magnetic-field-induced polarization responses, while the 2-2 type films with ferroelectric and ferromagnetic nanolaminates showed much weaker magnetoelectric coupling and lower magnetic induced polarization due to large in-plane constraint effect, which was in agreement with the recent observations.