Superconducting Y-Ba-Cu-O thin films have been formed on alumina substrates by sequential evaporation of ten Cu Y2O3BaF2layered structures and subsequent heat treatments. The best film showed a superconducting onset temperature of 92 K and a zero resistance at 50 K. The film properties were studied using electrical measurements, scanning electron microscopy, x-ray diffraction and secondary ion mass spectrometry. © 1990.
Queralt, X., Varela, M., Garcia-Cuenca, M. V., & Morenza, J. L. (1990). YBa2Cu3O,7 - x superconducting thin films by sequential evaporation on alumina substrates. Journal of The Less-Common Metals, 164–165(PART 1), 430–437. https://doi.org/10.1016/0022-5088(90)90243-D