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首页> 外文期刊>Physica, B. Condensed Matter >Damage spreading in a periodic nanoarray of magnetic posts
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Damage spreading in a periodic nanoarray of magnetic posts

机译:损伤在周期性的磁柱纳米阵列中扩散

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摘要

We investigate the dynamics of magnetism of a nanoscopic array, formed by monodomain magnetic posts, by means of the Pardavi-Horvath algorithm. The damage spreading technique is applied to check the stability of the magnetic structure of the array in the presence of an applied oscillating magnetic field of low frequency. As a space of parameters, we consider the plane (sigma, H-a), where sigma is the distribution width of the coercive fields of the array posts and H-a is the amplitude of the applied oscillating field. Within this plane an area is found, where local damages of the magnetic structure spread. We check also the possibility of collective flippings (avalanches) of magnetic moments of the post. We found no avalanches at any point of the (sigma, H-a) plane. (C) 2004 Elsevier B.V. All rights reserved.
机译:我们通过Pardavi-Horvath算法研究了由单畴磁柱形成的纳米阵列的磁性动力学。在存在施加的低频振荡磁场的情况下,采用损伤扩散技术来检查阵列的磁性结构的稳定性。作为参数空间,我们考虑平面(sigma,H-a),其中sigma是阵列接线柱矫顽场的分布宽度,H-a是施加的振荡场的振幅。在该平面内发现一个区域,磁性结构的局部损伤在该区域扩散。我们还检查了柱的磁矩集体翻转(崩塌)的可能性。我们没有发现(sigma,H-a)平面的任何雪崩。 (C)2004 Elsevier B.V.保留所有权利。

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