Local Structure of Substituted High Tc Superconductors

取代高温超导体的局域结构

• 批准号: 9004325
• 负责人: Frank Bridges
• 金额: $ 4万
• 依托单位: University of California-Santa Cruz
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-07-15 至 1992-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9004325&HistoricalAwards=false
• 关键词: Local; Structure; Substituted; Tc; Superconductors

A series of X-ray Absorption Fine Structure (XAFS) experiments is proposed, to measure the local structure about substituted atoms in high-Tc superconductors. Such experiments should furnish significant help in understanding the unique role that copper plays in these materials. In addition, they propose preliminary experiments on single crystal or oriented films and substituted- materials using the high polarization of synchrotron radiation to enhance the amplitude of the XAFS signal for particular bond directions.

为了测量高温超导体中取代原子的局部结构，提出了一系列的x射线吸收精细结构（XAFS）实验。这样的实验将对理解铜在这些材料中所扮演的独特角色提供重要的帮助。此外，他们提出了在单晶或取向薄膜和替代材料上的初步实验，利用同步辐射的高极化来增强特定键方向的XAFS信号的振幅。