• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Physics >Multi magnetic states in Co/Cu multilayered cylindrical nanowires studied by combination of off-axis electron holography imaging and micromagnetic simulations
【24h】

Multi magnetic states in Co/Cu multilayered cylindrical nanowires studied by combination of off-axis electron holography imaging and micromagnetic simulations

机译：Co / Cu多层圆柱形纳米线中的多磁能通过轴外电子全息成像和微观模拟的组合研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We report on a wide variety of magnetic states in Co/Cu multilayered nanocylinders grown by electrodeposition with different thicknesses of both elements. The remnant magnetic states in individual Co layers have quantitatively been determined at the nanoscale by micromagnetic reconstruction of the magnetic phase shift image obtained by electron holography. We demonstrate that the magnetization in the Co layers can present either uniform or vortex states. Also, different magnetic configurations can be observed within the same nanocylinder. In the case of vortices, the direction of the core can rotate almost at 90 degrees from the nanocylinder axis for layers with an aspect ratio close to 1. We show that the occurrence of each magnetic configuration depends on the aspect ratio of the layers, the direction of magnetocrystalline anisotropy, and, in some cases, the interlayer dipolar coupling. Such a wide variety of magnetic states is observed due to lower values of the Co magnetic constants (magnetization, exchange, anisotropy) with respect to bulk, typical of the electrodeposition process in a single bath, and to the local geometrical variation of the layers. We also calculated the phase diagram of the remnant magnetic states in a single layer for various amplitudes and orientations of the magnetocrystalline anisotropy and different directions of the saturation field. In particular cases, these phase diagrams, in addition to statistics of occurrence of each kind of magnetic configurations in the multilayer and the application of a saturation field in different directions, allow for recovering information on the preferential orientation of the crystalline anisotropy. Published under license by AIP Publishing.
机译：我们报道了通过电沉积的Co / Cu多层纳米碳吲哚，具有不同厚度的两种元素的各种磁性态。通过通过电子全息术获得的磁相移图像的微观重建，在纳米级上定量地确定单个CO层中的残余磁力。我们证明CO层中的磁化可以呈现均匀或涡旋状态。而且，可以在同一纳米锗晶片内观察到不同的磁性配置。在涡流的情况下，芯的方向可以从纳米磁体轴线旋转到90度，用于接近1.我们表明每个磁性配置的发生取决于层的纵横比，所以磁镀各向异性的方向，并且在某些情况下，层间偶极耦合。由于CO磁常数（磁化，交换，各向异性）的较低值相对于块状，电沉积工艺的典型电沉积工艺以及层的局部几何变化，因此观察到这种多种磁性状态。我们还计算了单层中的残余磁力状态的相图，用于各种幅度和饱和场的不同方向的各种幅度和取向。在特定情况下，除了在多层中的各种磁性配置的发生统计之外，这些相图以及在不同方向上施加饱和场，允许恢复关于结晶各向异性的优先取向的信息。通过AIP发布在许可证下发布。

著录项

  • 来源
    《Journal of Applied Physics》 |2019年第16期|163906.1-163906.13|共13页
  • 作者

    Biziere N.; Reyes D.; Wade T. L.; Warot-Fonrose B.; Gatel C.;

  • 作者单位

    Univ Toulouse CEMES UPR 8011 CNRS F-31055 Toulouse France;

    Univ Toulouse CEMES UPR 8011 CNRS F-31055 Toulouse France;

    Univ Paris Saclay CEA CNRS Lab Solides Irradies Ecole Polytech F-91128 Palaiseau France;

    Univ Toulouse CEMES UPR 8011 CNRS F-31055 Toulouse France;

    Univ Toulouse CEMES UPR 8011 CNRS F-31055 Toulouse France;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号