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Periodic magnetic domains in single-crystalline cobalt filament arrays

机译：单晶钴灯丝阵列中的周期性磁畴

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摘要

Magnetic structures with controlled domain wall pattern may be applied as potential building blocks for three-dimensional magnetic memory and logic devices. Using a unique electrochemical self-assembly method, we achieve regular single-crystalline cobalt filament arrays with specific geometric profile and crystallographic orientation, and the magnetic domain configuration can be conveniently tailored. We report the transition of periodic antiparallel magnetic domains to compressed vortex magnetic domains depending on the ratio of height to width of the wires. A "phase diagram" is obtained to describe the dependence of the type of magnetic domain and the geometrical profiles of the wires. Magnetoresistance of the filaments demonstrates that the contribution of a series of 180° domain walls is over 0.15% of the zero-field resistance ρ(H = 0). These self-assembled magnetic nanofilaments, with controlled periodic domain patterns, offer an interesting platform to explore domain-wall-based memory and logic devices.
机译：具有受控畴壁图案的磁性结构可以用作三维磁性存储器和逻辑设备的潜在构造块。使用独特的电化学自组装方法，我们获得了具有特定几何轮廓和晶体学取向的规则单晶钴丝阵列，并且可以方便地定制磁畴配置。我们报告了周期性反平行磁畴到压缩涡旋磁畴的过渡，具体取决于导线的高度与宽度之比。获得“相图”以描述磁畴类型和导线几何轮廓的相关性。细丝的磁阻表明，一系列180°畴壁的贡献超过零场电阻ρ（H = 0）的0.15％。这些具有可控的周期性畴模式的自组装磁性纳米丝，为探索基于畴壁的存储器和逻辑器件提供了一个有趣的平台。

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  • 来源
    《Physical review》 |2016年第5期|054405.1-054405.7|共7页
  • 作者

    Fei Chen; Fan Wang; Fei Jia; Jingning Li; Kai Liu; Sunxiang Huang; Zhongzhi Luan; Di Wu; Yanbin Chen; Jianmin Zhu; Ru-Wen Peng; Mu Wang;

  • 作者单位

    National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China;

    National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China;

    National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China;

    National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China;

    Department of Physics, University of California, Davis, California 95616, USA;

    Department of Physics, University of Miami, Coral Gables, Florida 33146, USA;

    National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China;

    National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China;

    National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China;

    National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China;

    National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China;

    National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China;

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