@article{25247, keywords = {Superconducting films, Texture, Alloys, Metals, Copper oxides, High−tc superconductors, Alignment, Barium oxides, Buffers, Critical current, Crystal growth, Film growth, Polycrystals, Quaternary compounds, Yttrium oxides, Zirconium oxides}, author = {Ronald P Reade and Paul H Berdahl and Stephen M Garrison and Richard E Russo}, title = {Laser deposition of biaxially textured yttria‐stabilized zirconia buffer layers on polycrystalline metallic alloys for high critical current Y‐Ba‐Cu‐O thin films}, abstract = {
Pulsed laser deposition of yttria-stabilized zirconia (YSZ) layers on polycrystalline metallic alloy substrates is used to produce an intermediate layer for YBa2Cu3O7-δ (YBCO) thin-film growth. The desired (001) YSZ texture is obtained at 1.0 mTorr oxygen pressure and 70 °C. Significant improvement in (001) texturing is demonstrated by using an ion beam to assist growth. Argon-ion-assisted growth produces layers with alignment of the in-plane crystal axes in addition to the (001)-normal texture. Highly c-axis-oriented biaxially aligned YBCO thin films can be deposited on these layers, with Tc(R=0)=92 K and Jc (77 K, B=0 T)=6×105 A/cm2 and Jc (77 K, 0.4 T)=8×104 A/cm2. With further improvement of the YSZ texture, the YBCO current-carrying capacity of films on polycrystalline metallic alloys may approach that of films on single-crystal substrates.
}, year = {1992}, journal = {Applied Physics Letters}, volume = {61}, pages = {2231-2233}, month = {11/1992}, doi = {10.1063/1.108277}, language = {eng}, }