Studies of Nanometer-Scale Magnetism in Clusters and Adatoms Using Spin-Polarized Scanning Tunneling Microscopy

使用自旋偏振扫描隧道显微镜研究团簇和吸附原子中的纳米级磁性

• 批准号: 9223684
• 负责人: Phillip First
• 金额: $ 12万
• 依托单位: Georgia Tech Research Corporation
• 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: 1993-09-01 至 1997-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9223684&HistoricalAwards=false
• 关键词: Studies; Nanometer; Scale; Magnetism; Clusters

9223684 First The objective of this project is to understand the evolution of magnetism, from adatoms to clusters to thin films. Emphasis is placed on clusters and adatoms. Of interest is the minimum size required for cooperative magnetic properties. Also of interst are interparticle magnetic interactions. The result will be relevant to development of magnetic cluster media, magnetic thin-film technology, and theories of low-dimensional magnetism. Scanning tunneling microscopy and spin-polarized scanning tunneling microscopy will be used in the investigations. %%% This project will study magnetic interactions between magnetic atoms on surfaces. Groups of atoms will be built up to form clusters, and the variation of the magnetic properties of the cluster with size will be studied with atomically sensitive microscopies. The results will be relevant to the development of new magnetic media for thin film recording and general information technology. ***

9223684首先，这个项目的目的是了解磁性的演变，从吸附原子到团簇到薄膜。 重点放在集群和吸附原子。 感兴趣的是合作的磁性所需的最小尺寸。 粒子间的磁相互作用也很有趣。 其结果将与磁性团簇介质、磁性薄膜技术和低维磁性理论的发展相关。 扫描隧道显微镜和自旋极化扫描隧道显微镜将用于调查。 这个项目将研究表面上磁性原子之间的磁性相互作用。 原子团将被建立起来形成团簇，团簇的磁性随尺寸的变化将用原子敏感的显微镜来研究。 研究结果将对薄膜磁记录新介质和通用信息技术的发展具有重要意义。 ***