%0 Journal Article
%T High Quality YBCO Film Growth on SrTiO_3-Buffered LaAlO_3 Substrate by Full Solution Method<br>
%A Sansheng WANG Lin WANG Bingfu GU
%A <br>
%J 材料科学技术学报
%D 2008
%I 
%X A full solution method has been developed as a low cost process of YBa2Cu3O7-x (YBCO) coated conductor fabrication.In this study,highly biaxially textured SrTiO3 (STO) buffer layers were fabricated on LaAlO3 (LAO) single crystal substrates by sol-gel method using metal alkoxides as the staring precursor materials.High quality YBCO superconducting film was then fabricated on STO-buffered LAO substrate by triflvoroacetic metalorganic deposition (TFA-MOD) method.For the YBCO superconducting film,only (001) diffraction peaks can be detected by XRD (X-ray diffraction) analysis with no other phases detectable.Especially,In-plane texture of YBCO film is improved compared to that of STO buffer layer from phi scans analysis,which indicates the self-epitaxy phenomenon explained by considering interfacial energy.STO and YBCO films both show c-axis oriented grains growt.h and have uniform surface microstructure.A critical transition temperature,Tc (R=0) of 89.5 K and a critical current density of 2 mA/cm2 (17 K,self-field) were obtained for a 0.2 μm thick YBCO film on STO-buffered LAO substrate.No reaction between YBCO and STO was detected by XRD analysis.This full solution process may provide a promising low cost fabrication route for YBCO coated conductors on metal tape.
%K YBCO coated conductor
%K Full solution
%K Epitaxy
%K Superconductivity<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=324DC3CAB22330DB19158AE0A9B7BFA5&aid=28D1CE9676F0D60BC64D33630709F733&yid=67289AFF6305E306&vid=B91E8C6D6FE990DB&iid=B31275AF3241DB2D&sid=7E7F5B01D43BD73F&eid=F52FA2254444BE97&journal_id=1005-0302&journal_name=材料科学技术学报&referenced_num=0&reference_num=21