Piezo-electrical control of gyration dynamics of magnetic vortices
Piezo-electrical control of gyration dynamics of magnetic vortices
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DOI：
10.1063/1.5110169
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发表时间：
2019-08
影响因子：
4
通讯作者：
M. Filianina;L. Baldrati;T. Hajiri;K. Litzius;M. Foerster;L. Aballe;Mathias Kläui
中科院分区：
文献类型：
--
作者：
M. Filianina;L. Baldrati;T. Hajiri;K. Litzius;M. Foerster;L. Aballe;Mathias Kläui
在这项工作中，我们首先静态图像的电控静磁配置的磁涡旋状态，然后我们动态图像的时间分辨涡核旋转电场调谐。我们展示了操纵的涡核回转轨道的工程磁各向异性。我们实现了这一点，通过电场在一个合成的异质结构组成的压电元件与磁致伸缩的微结构，其中的磁各向异性可以控制的应变。我们直接显示了定制的各向异性对涡旋状态的静态形状和动态涡旋核心轨道的强烈影响。结果表明，利用电场诱导的应变作为一种低功耗的方法来调节磁涡旋的动力学响应的可能性。在这项工作中，我们首先静态成像的电控磁涡旋态的静磁配置，然后我们动态成像的时间分辨的涡核旋转电场调谐。我们展示了操纵的涡核回转轨道的工程磁各向异性。我们实现了这一点，通过电场在一个合成的异质结构组成的压电元件与磁致伸缩的微结构，其中的磁各向异性可以控制的应变。我们直接显示了定制的各向异性对涡旋状态的静态形状和动态涡旋核心轨道的强烈影响。结果表明，利用电场诱导的应变作为一种低功耗的方法来调整磁涡旋的动力学响应的可能性。
In this work, we first statically image the electrically controlled magnetostatic configuration of magnetic vortex states and then we dynamically image the time-resolved vortex core gyration tuned by electric fields. We demonstrate the manipulation of the vortex core gyration orbit by engineering the magnetic anisotropies. We achieve this by electric fields in a synthetic heterostructure consisting of a piezoelement coupled with magnetostrictive microstructures, where the magnetic anisotropy can be controlled by strain. We directly show the strong impact of the tailored anisotropy on the static shape of the vortex state and the dynamic vortex core orbit. The results demonstrate the possibility of using electric field induced strain as a low-power approach to tune the dynamical response of magnetic vortices.In this work, we first statically image the electrically controlled magnetostatic configuration of magnetic vortex states and then we dynamically image the time-resolved vortex core gyration tuned by electric fields. We demonstrate the manipulation of the vortex core gyration orbit by engineering the magnetic anisotropies. We achieve this by electric fields in a synthetic heterostructure consisting of a piezoelement coupled with magnetostrictive microstructures, where the magnetic anisotropy can be controlled by strain. We directly show the strong impact of the tailored anisotropy on the static shape of the vortex state and the dynamic vortex core orbit. The results demonstrate the possibility of using electric field induced strain as a low-power approach to tune the dynamical response of magnetic vortices.