GOALI: Epitaxial Growth of Superconducting Thin Film Tapes with Prefabricated Nanostructures

这一学术联系机会奖(GOALI)为开发一种在金属衬底上用预制纳米棒生长超导薄膜的新方法提供资金。该方法是在柔性金属带上的单晶状缓冲膜上预制纳米棒，然后在缓冲膜上用金属有机化学气相沉积(MOCVD)的方法生长外延超导薄膜。在这个项目中，将研究三种在单晶状缓冲模板上预制纳米结构的方法。将确定影响纳米棒在缓冲模板上的密度、尺寸、形态和取向的关键因素，以便以可预测的方式控制纳米棒。我们将研究通过纳米棒迷宫在衬底上外延生长超导薄膜的科学。将评估这些超导薄膜的钉扎效果，以确定和控制预制纳米棒缺陷结构的影响。该计划的成功结果将使超导薄膜磁带在高磁场下的临界电流与最先进的磁带相比有显著提高。此外，通过将纳米缺陷生长与外延超导体生长过程分离，有望解决当今技术中存在的生长速度限制问题。该计划的预期意义是创造了一种变革性的加工科学，导致了行业对超导带材的强劲制造，这反过来将产生具有更好的性能、一致性和一致性的商业产品。该计划的成功成果可以在超导体领域产生广泛和积极的影响，为能源以及医学、交通、粒子物理和化学研究中的一系列问题提供解决方案。此外，该程序可以广泛地使人们更好地了解薄膜材料中的纳米结构以及MOCVD工艺科学。

This Grant Opportunity for Academic Liaison with Industry (GOALI) award provides funding for the development of a novel approach to grow superconducting thin films on metal substrates with prefabricated nanorods. The approach consists of prefabricated nanorod growth on single-crystalline-like buffer film on flexible metal tape followed by epitaxial superconductor film growth by Metal Organic Chemical Vapor Deposition (MOCVD) on the buffer film. Three approaches will be investigated in this program to prefabricate nanostructures on single-crystalline-like buffer templates. The key factors that affect density, dimensions, morphology and orientation of nanorods on the buffer templates will be determined so that the nanorods can be controlled in a predictable manner. The science of epitaxial growth of the superconducting film on an underlying substrate through a maze of nanorods will be studied. The pinning effectiveness of these superconducting films will be evaluated to determine and control the impact of prefabricated nanorod defect structure. A successful outcome of this program will enable superconducting thin film tapes with significantly improved critical current in high magnetic fields compared to the state-of-the art. Additionally, by separation of nanodefect growth from the epitaxial superconductor growth process, it is expected that growth rate limitation problems that exist in today's technology can be resolved. The expected significance of the program is the creation of a transformative processing science leading to robust manufacturing of superconducting tapes by industry, which in turn would yield a commercial product with much better performance, uniformity and consistency. A successful outcome of this program can result in a broad and positive impact in the field of superconductors which provide solutions to a wide spectrum of problems in energy as well in medicine, transportation, particle physics and chemical research. Furthermore, the program can broadly enable a stronger understanding of nanostructures in thin film materials as well MOCVD process science.