Chemical solution deposition of highly oriented strontium titanate buffer layers for coated conductors

Highly oriented strontium titanate films have been processed on single-crys tal lanthanum aluminate and on textured nickel substrates using solution de position. Precursor solutions of strontium acetate and titanium Iv butoxide in acetic acid and methanol were deposited on substrates using spin coatin g and heat treated in a reducing atmosphere in a single stage to yield text ured strontium titanate films. A dense crack-free microstructure with a gra in size of the order of 100 nm was achieved along with a texture of the sam e order as the underlying substrate. These results offer promise for scalab le processing of buffer layers on textured nickel.