Experimental Studies of Thin Film Magnetism

这个实验项目研究超薄膜和基于超薄膜的系统的结构--磁-性能关系，包括多层堆栈和微米级的二维结构。与理论团体有很强的互动。这提供了一种测试特定于薄膜磁性领域的理论模型和数值模拟的手段。有趣的现象包括由低维、与外延有关的薄膜应力和破坏的跨国对称性引起的新的磁各向异性机制、层间振荡磁耦合、磁结构与磁体/超导薄膜界面中的磁通涡旋之间的相互作用。这项研究涉及光电子能谱、高速克尔偏振测量和一系列表征方法。该项目的一个特别优势是能够研究磁域松弛或改变其极化状态的速度。这提供了有关磁开关时间的基本信息，这是一个非常有技术意义的领域，也是一个基本的兴趣领域。该方案通过对学生的培训和对先进微结构和器件中心(CAMD)的重大补充，为区域科学/技术基础设施做出贡献。这是一个关于薄膜磁性的实验固体物理项目。研究涉及(1)静态磁现象，(2)动态磁现象，(3)磁/超导薄膜中的耦合拓扑缺陷。本项目中的薄膜结构和磁现象在计算机硬盘、读取头和其他磁结构中的磁结构中得到响应。这项工作的兴趣在于可以通过实验获得的基本参数，并与理论模型和模拟进行比较。该项目的一个特别优势是能够研究磁域松弛或改变其极化状态的速度。这提供了有关磁开关时间的基本信息，这是一个极具技术意义的领域。该方案通过对学生的培训和对先进微结构和器件中心(CAMD)的重大补充，为区域科学/技术基础设施做出贡献。

9972113ErskineThis experimental project investigates structure -- magnetic-property relationships in ultrathin films and ultrathin-film-based systems, including multilayer stacks and micron-scale two-dimensional structures. There are strong interactions with theoretical groups. This provides a means of testing theoretical models and numerical simulations specific to the thin film magnetics area. Phenomena of interest include novel magnetic anisotropy mechanisms resulting from low dimensionally, epitaxy-related films stress and broken transnational symmetry, oscillatory interlayer magnetic couplings, interactions between magnetic structures and flux vortices in magnet/superconductor thin film interfaces. The research involves photoelectron spectroscopy, high-speed Kerr polarimetry, and a range of characterization methods. A particular strength of the project is the ability to study the speed with which magnetic domains relax, or change their state of polarization. This provides fundamental information about magnetic switching times, an area of great technological as well as fundamental interest. The program contributes to regional scientific/technological infrastructure through training of students and through significant additions to the Center for Advanced Microstructures and Devices (CAMD). %%%This is an experimental solid state physics project dealing with thin film magnetism. The research involves (1) static magnetic phenomena, (2) dynamic magnetic phenomena, and (3) coupled topological defects in magnetic/superconducting films. The thin film structures and magnetic phenomena in this project are echoed in magnetic structures found in computer hard discs, read heads, and other magnetic structures. The interest in this work is on fundamental parameters that can be experimentally obtained and compared with theoretical models and simulations. A particular strength of the project is the ability to study the speed with which magnetic domains relax, or change their state of polarization. This provides fundamental information about magnetic switching times, an area of great technological interest. The program contributes to regional scientific/technological infrastructure through training of students and through significant additions to the Center for Advanced Microstructures and Devices (CAMD).