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Rapid magnetization reversal in magnetic small particles induced by non-static bias field

机译:非静态偏置磁场引起的磁性小颗粒的快速磁化反转

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Magnetization reversal processes by a switching field in single-domain nano-sized magnetic particles in the presence of a small transverse non-static bias field are studied. Applying an oscillating bias field instead of a static field, the reversal time becomes much shorter when the switching field is slightly stronger than the effective anisotropy field. A pulsed bias field of a suitably chosen duration in the nanosecond scale is found to induce a rapid switching, even when the switching field is smaller than the anisotropy field. The dependence of the reversal time on the frequency of an oscillating bias field and the duration of a pulsed bias field are studied. The present work thus complement the earlier studies on switching in the presence of a static bias field. (c) 2005 Elsevier Ltd. All rights reserved.
机译:研究了在一个小的横向非静态偏置磁场的存在下,单畴纳米尺寸磁性粒子中的开关磁场引起的磁化反转过程。如果施加一个振荡偏置场而不是一个静态场,则当切换场比有效各向异性场稍强时,反转时间将大大缩短。发现即使在切换场小于各向异性场时,也可以选择纳秒级的适当选择的持续时间的脉冲偏置场来引起快速切换。研究了反向时间对振荡偏置场频率和脉冲偏置场持续时间的依赖性。因此,本工作是对静态偏置场存在下的开关的早期研究的补充。 (c)2005 Elsevier Ltd.保留所有权利。

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