Highly oriented YBa2Cu4O8 films fabricated at atmospheric pressure by the sol–gel method using metal alkoxides

Abstract
YBa2Cu4O8 films were fabricated at atmospheric pressure by the sol–gel method using metal alkoxides. Gel films on Ag substrates, prepared from a heterometallic alkoxide solution, were fired at 800 °C for 10 h to yield highly oriented YBa2Cu4O8 films. Simultaneously using both the sol–gel method and Ag as a substrate was found to be remarkably effective for promoting the formation of the YBa2Cu4O8 phase and producing highly oriented films.