Investigation of Domain Wall Mobility and Domain Reversal in Magnetic Metal Films

磁性金属薄膜中畴壁迁移率和畴反转的研究

• 批准号: 9972538
• 负责人: Philip Wigen
• 金额: --
• 依托单位: Ohio State University Research Foundation -DO NOT USE
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-06-15 至 2002-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9972538&HistoricalAwards=false
• 关键词: Investigation; Domain; Wall; Mobility; Reversal

9972538WigenThis is a condensed matter physics project which addresses the magnetic properties of thin films. Fundamental investigations of the magnetization reversal process in nanostructured magnetic materials, such as thin films, are relevant to information storage densities in the films and to the basic read/write operation. This project will employ ferromagnetic resonance (FMR) and other techniques to study the influence of film morphology on the dynamics of domain wall motion, a major factor in the read/write process. Of interest is the role of the anisotropy energy on the wall structure, especially on the Neel cap regions of the domain wall. A picosecond strobe laser beam and magneto-optic Kerr effect spectrometer will also be used to investigate the domain wall mobility in cobalt films and wires. The project provides excellent training for graduate students in areas of fundamental physics and in areas of technical magnetism relevant to the information storage industry. Students also benefit from the use of state-of-the art instruments and techniques employed in the experiments.%%%This project will pursue fundamental investigations of the physics of magnetization reversal processes in nano-structured magnetic materials. The studies will investigate processes that are important in the context of materials employed in the information storage technology arena. A primary area of interest is the magnetization reversal dynamics in thin metal films. This is a critical factor in information storage densities and read/write operations in next-generation computers. The experiments employ magnetic resonance, laser probes, and magneto-optic Kerr effects instrumentation. The training that students and post-doctoral research scientists receive while working on the experiments will prepare them for cutting edge materials and device related careers in industry, academe, or government.

这是一个凝聚态物理项目，研究薄膜的磁性。纳米磁性材料(如薄膜)中磁化反转过程的基础研究与薄膜中的信息存储密度和基本读/写操作有关。本项目将使用铁磁共振(FMR)和其他技术来研究薄膜形态对磁区壁运动动力学的影响，磁区壁运动是读/写过程中的一个主要因素。令人感兴趣的是各向异性能量在壁结构上的作用，特别是在畴壁的Neel帽区上。皮秒频闪激光和磁光克尔效应光谱仪也将被用来研究钴薄膜和金属丝中的磁区壁迁移率。该项目为研究生在基础物理领域和与信息存储行业相关的技术磁性领域提供了出色的培训。学生还可以从实验中使用的最先进的仪器和技术中受益。本项目将继续对纳米结构磁性材料中磁化反转过程的物理基础进行研究。这些研究将调查在信息存储技术领域中使用的材料的重要过程。一个主要感兴趣的领域是金属薄膜中的磁化反转动力学。这是下一代计算机中信息存储密度和读/写操作的关键因素。这些实验使用了磁共振、激光探头和磁光克尔效应仪器。学生和博士后研究科学家在实验期间接受的培训将为他们在工业、学术或政府部门从事尖端材料和设备相关职业做好准备。