Local Atomic Structure of Complex Oxides

复杂氧化物的局部原子结构

• 批准号: 0404781
• 负责人: Takeshi Egami
• 金额: $ 50.2万
• 依托单位: University of Tennessee Knoxville
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-08-01 至 2008-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0404781&HistoricalAwards=false
• 关键词: Local; Atomic; Structure; Complex; Oxides

The research goal of this project is to elucidate the remarkable structure-properties relationships for electronic complex oxides such as high-temperature superconductivity (HTSC) through the study of their local structure at a nanometer scale, and to provide the scientific basis for developing new materials with better properties. This will be achieved principally through neutron and x-ray scattering with the atomic pair-density function (PDF) analysis, applied for static and dynamic structures. The broader impacts include the improvement the PDF method and further demonstration of its power as an alternative method of structural characterization. Products of this project, the improved software for the PDF determination, will be made available to general users. This will benefit the field of nanotechnology, catalyst research, ceramics research and materials science in general.

本项目的研究目标是通过对高温超导(HTSC)等电子复合氧化物纳米尺度局域结构的研究，阐明其显著的结构-性能关系，为开发性能更好的新材料提供科学依据。这将主要通过应用于静态和动态结构的原子对密度函数(PDF)分析的中子和X射线散射来实现。更广泛的影响包括改进PDF方法和进一步展示其作为结构表征的替代方法的能力。本项目的产品是经改进的PDF测定软件，将向普通用户提供。这将使纳米技术、催化剂研究、陶瓷研究和材料科学领域普遍受益。