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Microstructure - Composition - Superconducting Properties Relationships in Epitaxial TBCCO Film Growth

外延TBCCO薄膜生长中的微观结构-成分-超导性能关系

基本信息

批准号：
9360813
负责人：
Michael Eddy
金额：
$ 6.5万
依托单位：
SUPERCONDUCTOR TECHNOLOGIES INC
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
1994
资助国家：
美国
起止时间：
1994-04-01 至 1994-12-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9360813&HistoricalAwards=false
关键词：
Microstructure Composition Superconducting Properties Relationships

项目摘要

9360813 Eddy The preparation of epitaxial TlBaCaCuO (TBCCO) films has been demonstrated on only a small number of substrates (Lanthanum Aluminate and Strontium Titanate). The films produced have been optimized primarily for microwave performance, and a more systematic evaluation of film properties is required. This proposal outlines a program to investigate the microstructure - composition - superconducting properties relationships for the growth of high quality, epitaxial TBCCO films. In addition to this analysis, the mechanism for preparing low resistance metal contacts to TBCCCO will be explored. Transmission electron microscopy (TEM) will be used to investigate the film microstructure and metal-TBCCO interface. The goals of the program are to optimize the composition of the TBCCO deposits to produce a more homogeneous film capable of maintaining high quality superconducting properties even at the narrowest line widths (5um), and to understand and improve the metal-superconductor contacts. It is essential for the preparation of the highest quality to control key process variables and have the ability to vary parameters for process optimization. We believe optimization. We believe optimization of composition is the most important next step for improvement of TBCCO films to meet the stringent requirements imposed by the next generation of superconducting film applications. ***

小行星9360813 外延TlBaCaCuO（TBCCO）薄膜的制备已被证明只有少数基板（铝酸镧和钛酸锶）。生产的薄膜主要针对微波性能进行了优化，需要对薄膜性能进行更系统的评估。该计划概述了一个计划，以研究高质量的外延TBCCO薄膜的生长的微观结构-成分-超导性能的关系。除了这个分析，机制准备低电阻金属接触TBCCCO将进行探索。透射电子显微镜（TEM）将用于研究薄膜的微观结构和金属-TBCCO界面。该计划的目标是优化TBCCO沉积物的成分，以产生更均匀的薄膜，即使在最窄的线宽（5 μ m）下也能保持高质量的超导性能，并了解和改善金属-超导体接触。对于制备最高质量的产品来说，控制关键工艺变量并能够改变工艺参数以优化工艺至关重要。我们相信优化。我们认为，优化成分是改善TBCCO薄膜的最重要的下一步，以满足下一代超导薄膜应用的严格要求。 ***