Electrical control of magnetic reversal processes in magnetostrictive structures
Electrical control of magnetic reversal processes in magnetostrictive structures
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DOI：
10.1063/1.4789396
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发表时间：
2013-01-21
影响因子：
4
通讯作者：
Rushforth, A. W.
中科院分区：
文献类型：
--
作者：
Cavill, S. A.;Parkes, D. E.;Rushforth, A. W.
我们展示了应变引起的，形状引起的，和磁晶各向异性能量之间的相互作用，在微米级磁致伸缩器件耦合到压电换能器。改变换能器上的电压调整磁滞回线的形状和磁反转过程，其涉及单个180度或90度畴壁，或者通过形成规则的通量闭合畴图案来进行。在没有外部磁场的情况下，通过扫描所施加的电压，可以抑制或增强磁通闭合域。我们演示的功能可能会发现在磁计划的信息存储和逻辑处理的应用程序。(C)2013年美国物理学会。[http：//dx.doi.org/10.1063/1.4789396]
We demonstrate the interplay between strain-induced, shape-induced, and magnetocrystalline anisotropy energies in a micron scale magnetostrictive device coupled to a piezoelectric transducer. Varying the voltage on the transducer tunes the shape of the magnetic hysteresis loops and the magnetic reversal processes, which involve a single 180 degrees or 90 degrees domain wall, or proceed via the formation of a regular flux closure domain pattern. The flux closure domains can be suppressed or enhanced in the absence of an external magnetic field by sweeping the applied voltage. The functionalities we demonstrate may find applications in magnetic schemes for information storage and logical processing. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4789396]