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Influence of dipolar energy on the magnetization reversal in magnetization-modulated thin film systems: Model and experiment

机译:偶极能量对磁化调制薄膜系统中磁化反转的影响:模型和实验

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摘要

Laterally patterned magnetic hybrid structures display novel magnetic reversal properties, which are related to the fundamental exchange coupling between material interfaces. We present an analytical model that depicts the influence of dipolar fields in mesoscopic structures with modulated saturation magnetization on the magnetization reversal and the local magnetic states, as well as the occurrence of a lateral exchange-spring effect. This is done by confining a lateral array of stripes with alternating saturation magnetization M_s in a micrometer-sized square, introducing external boundary conditions to the system. The calculations were performed for distinct stripe and array sizes, as well as different M_s values. From the calculations a stability region of array and stripe sizes is derived, in which the lateral exchange-spring effect occurs. The obtained modeling results were found to be in agreement with the experimental data. The model adds a building block to the fundamental understanding of magnetic hybrid structures.
机译:横向图案化的磁性混合结构显示出新颖的磁性反转特性,这与材料界面之间的基本交换耦合有关。我们提供了一个分析模型,该模型描述了具有调制饱和磁化强度的介观结构中的偶极场对磁化强度反转和局部磁态的影响,以及横向交换弹簧效应的发生。这是通过将横向条纹条纹的饱和磁化强度M_s限制在微米大小的正方形中,从而将外部边界条件引入系统来完成的。针对不同的条带和阵列大小以及不同的M_s值执行了计算。从计算中得出阵列和条带尺寸的稳定区域,其中发生横向交换弹簧效应。发现所获得的建模结果与实验数据一致。该模型为磁性混合结构的基本理解增加了基础。

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  • 来源
    《Physical review》 |2011年第17期|p.174423.1-174423.6|共6页
  • 作者单位

    Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden Rossendorfe.V., P.O. Box 510119, D-01314 Dresden, Germany;

    Leibniz Institute for Solid State and Materials Research IFW Dresden, P.O. Box 270116, D-01171 Dresden, Germany;

    Leibniz Institute for Solid State and Materials Research IFW Dresden, P.O. Box 270116, D-01171 Dresden, Germany,Department of Mechanical Engineering, Institute for Materials Science, TU Dresden, D-01062 Dresden, Germany;

    Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden Rossendorfe.V., P.O. Box 510119, D-01314 Dresden, Germany;

    Leibniz Institute for Solid State and Materials Research IFW Dresden, P.O. Box 270116, D-01171 Dresden, Germany,Department of Mechanical Engineering, Institute for Materials Science, TU Dresden, D-01062 Dresden, Germany;

    Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden Rossendorfe.V., P.O. Box 510119, D-01314 Dresden, Germany;

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  • 正文语种 eng
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  • 关键词

    magnetic properties of interfaces (multilayers, superlattices, heterostructures);

    机译:界面的磁性(多层;超晶格;异质结构);

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