Growth of Ba2YnbO6 Buffer Layers by Pulsed Laser Deposition on Bi-Axially Textured Ni Alloy and Cu-Alloy Substrates

摘要

Epitaxial groth of Ba2YNbO6 (BYNO) thin films on biaxially textured Ni, Ni-W alloy and Cu-Fe alloy substrates is reported. Commercially available Ni and Ni-W alloy substrates with a full width half maximum (FWHM) of 6-7°biaxial texture were used. A highly textured Cu-Fe alloy substrate with FWHM of 5-7.5° was produced using the RABiTS process. BYNO films deposited on these Cu-Fe substrates have 8-10°FWHM texture. An attempt was made to deposit YBa2Cu3O7-x (Y-123) films on these buffer layers. Surface morphology of BYNO films and Y-123 films were investigated using a scanning electron microscope.