Magnetism and Magneto-Optics of Artificially-Structured Materials

人工结构材料的磁学和磁光学

• 批准号: 9222976
• 负责人: David Sellmyer
• 金额: $ 21万
• 依托单位: University of Nebraska-Lincoln
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-06-01 至 1996-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9222976&HistoricalAwards=false
• 关键词: Magnetism; Magneto; Optics; Artificially; Structured

This project involves studies of novel magneto-optically active materials. The structures include artificially structured magnetic multilayers, thin films and nanoscale clusters of nanocrystalline composites, and manganese-based compounds and films with anisotropic structures. The work will focus on 1) the relationships between magnetization reversal, domain dynamics, and nanostructures of the films, and 2) fundamental magneto-optical properties of novel phases synthesized to produce significant magneto-optic effects. A range of magnetization measurements will be performed. In addition, spectroscopic ellipsometry will be used to fully characterize the dielectric tensor properties of the materials. In selected cases, photoemission measurements will be used to study the electronic structure of the new compounds. The measurements will increase the understanding of fundamental relationships between electronic structure and magneto-optics in several new classes of transition metal compounds. %%% Magnetic thin films and particulate magnetic materials are being synthesized and studied to determine their megneto-optic properties -- which are critical in determining their utility as magnetic storage media. The objective of the research is to prepare new materials with enhanced properties and potential for use in optical storage discs, computer hard discs, and other form of magnetic storage device. The fundamental properties of the materials will be investigated by magnetic and optical spectroscopy techniques.

该项目涉及对新型磁性活性材料的研究。 这些结构包括人为结构的磁性多层，薄膜和纳米晶体复合材料的纳米级簇，以及带有各向异性结构的基于锰的化合物和膜。 这项工作将集中于1）磁化逆转，域动力学和膜的纳米结构之间的关系，以及2）合成可产生重要磁光效应的新型新相的基本磁光特性。 将进行一系列磁化测量。 另外，光谱椭圆法将用于充分表征材料的介电张量性能。 在选定的情况下，光发射测量将用于研究新化合物的电子结构。 测量结果将增加对几种新的过渡金属化合物中电子结构和磁性磁磁之间的基本关系的理解。 %%;磁性薄膜和颗粒电气材料正在合成和研究以确定其Megneto-Optic特性 - 这对于确定其效用为磁性储存介质至关重要。 该研究的目的是准备具有增强特性的新材料，并有可能在光学存储盘，计算机硬盘和其他形式的磁性存储设备中使用。 材料的基本特性将通过磁和光谱技术研究。