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

9360813涡流外延TlBaCaCuO(TbCCO)薄膜仅在少量衬底(铝酸镧和钛酸锶)上制备。所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。该提案概述了一项研究高质量外延TbCCO薄膜生长的微结构-成分-超导性能关系的计划。在此分析的基础上，还将对制备低阻金属触头的机理进行探讨。用透射电子显微镜研究了薄膜的微观结构和金属-TBCCO界面。该计划的目标是优化TBCCO沉积的成分，以生产更均匀的薄膜，即使在最窄的线宽(5微米)下也能保持高质量的超导性能，并了解和改进金属-超导接触。控制关键工艺变量，并具有改变工艺优化参数的能力，对于制备最高质量的涂料是至关重要的。我们相信最优化。我们认为，成分的优化是下一步改进TBCCO薄膜以满足下一代超导薄膜应用所提出的严格要求的最重要的下一步。***

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. ***