Development of YBa2Cu3O7-Ba2YTaO6 nanocomposites by chemical solution deposition

27th International Conference on Low Temperature Physics

Garcés, P.^1 ; Coll, M.^2 ; Castro, H.^1 ; Puig, T.^2 ; Obradors, X.^2

Universidad National de Colombia, Bogotá, Colombia^1

Instituto de Ciencia de Materiales-Consejo Superior de Investigaciones Cientificas, Barcelona, Spain^2

关键词: Chemical solution deposition;    Chemical solutions;    Critical temperatures;    Film microstructures;    Inductive measurement;    Nanocomposite thin films;    Nanoparticle sizes;    Superconducting properties;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/568/2/022015/pdf
DOI  :  10.1088/1742-6596/568/2/022015

来源: IOP

【 摘 要 】

In this work we report The study of chemical solution deposited (CSD) YBa2Cu3O7-δ(YBCO) nanocomposite thin films, with diluted Ba2YTaO6(BYTO) nanoparticles. We studied The influence of thermal treatment on The properties of nanocomposites, with different content of secondary phases (6%, 10% and 20%). We measured The film microstructure, nanostrain and The superconducting properties: critical temperature (Tc) and critical current density (Jc). The films were characterized using X-rays diffraction and SQUID inductive measurements. The use of two steps in The thermal treatment allowed to increase The nanostrain up to 0.30% for high nanoparticle loads (20%BYTO), decrease The nanoparticle size down to 15 nm and lead a smoother Jc(H) dependence, compared with The standard (single-step) thermal process and The pristine YBCO films.