Molecular Chemistry of the Superconductor - Substrate Interface

利用具有最佳和可重复性能的超导薄膜制造器件的商业生产的关键是确定具有精确控制化学计量和形态的过程。这种控制只能通过彻底了解作为生长薄膜模板的超导体-衬底界面的化学成分来实现。提出的研究目的是确定不同的衬底对挥发性模型钡源试剂沉积的影响，以获得氧化钡。主要的气相产物将被识别，与沉积物的组成相关联，并与均质氧化分解研究的结果进行比较。将获得初始速率数据并用于确定分解动力学。

The key to the commercial production of devices fabricated from superconducting thin films with optimal and reproducible properties is the identification of a process that has exact control of stoichiometry and morphology. This control can only be achieved with a thorough understanding of the chemistry at the superconductor-substrate interface which serves as the template for the growing film. The objective of the proposed research is to determine the influence of different substrates on the deposition of a volatile model barium source reagent to give barium oxide. The predominate gas phase products will be identified, correlated to the composition of the deposits and compared to results obtained in homogeneous oxidative decomposition studies. Initial rate data will be obtained and used to determine the kinetics of the decomposition.