Tailoring Spin Textures in Complex Oxide Micromagnets
Tailoring Spin Textures in Complex Oxide Micromagnets
复制标题
DOI：
10.1021/acsnano.6b03770
复制
发表时间：
2016-09-01
期刊：
影响因子：
17.1
通讯作者：
Takamura, Yayoi
中科院分区：
文献类型：
--
作者：
Lee, Michael S.;Wynn, Thomas A.;Takamura, Yayoi
近年来，磁性材料中亚微米尺寸的工程拓扑自旋纹理已成为各种基于自旋的存储器件的构建模块。这些磁性配置的示例包括磁性斯格明子、涡流和磁畴壁。在这里，我们展示了通过基本材料参数、微磁体几何形状和外延应变的微妙平衡来控制和表征复杂氧化物微磁体中自旋纹理随温度变化的演化的能力。这些结果表明，为了充分描述观察到的自旋纹理，有必要考虑微磁体内磁参数的空间变化。这项研究提供了准确表征此类结构的框架，从而实现基于复杂氧化物薄膜的自旋存储器件的高效设计。
Engineered topological spin textures with submicron dimensions in magnetic materials have emerged in recent years as the building blocks for various spin-based memory devices. Examples of these magnetic configurations include magnetic skyrmions, vortices, and domain walls. Here, we show the ability to control and characterize the evolution of spin textures in complex oxide micromagnets as a function of temperature through the delicate balance of fundamental materials parameters, micro magnet geometries, and epitaxial strain. These results demonstrate that in order to fully describe the observed spin textures, it is necessary to account for the spatial variation of the magnetic parameters within the micromagnet. This study provides the framework to accurately characterize such structures, leading to efficient design of spin-based memory devices based on complex oxide thin films.