Voltage-dependent ferromagnetic resonance in epitaxial multiferroic nanocomposites
Voltage-dependent ferromagnetic resonance in epitaxial multiferroic nanocomposites
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DOI：
10.1063/1.3319507
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发表时间：
2010-02-22
影响因子：
4
通讯作者：
Clinton, T. W.
中科院分区：
文献类型：
--
作者：
Benatmane, Nadjib;Crane, S. P.;Clinton, T. W.
我们证明了电控制的铁磁共振（FMR）在多铁性纳米结构。利用具有磁敏和电敏特性的微波探针对一系列不同厚度的异质外延BiFeO（3）-NiFe（2）O（4）纳米复合材料进行了表征。我们施加一个电场的样品，并观察电压驱动的FMR频率的变化，反映了磁各向异性的变化。FMR线宽的电压依赖性更加明显，表明电极化可以在材料中引起相对大的磁不均匀性。这些特性可能导致一类频率和带宽都是电可调的射频滤波器。
We demonstrate electrical control of the ferromagnetic resonance (FMR) in multiferroic nanostructures. A series of heteroepitaxial BiFeO(3)-NiFe(2)O(4) nanocomposites of varying thickness are characterized using a microwave probe with magnetic and electric sensitivity. We apply an electric field to a sample and observe voltage-driven shifts in the FMR frequency, reflecting a change in magnetic anisotropy. The voltage dependence of the FMR linewidths is even more pronounced, indicating the electric polarization can induce relatively large magnetic nonuniformity in the material. These characteristics may lead to a class of rf filters where both frequency and bandwidth are electrically tunable.