Epitaxial CeO2/MgO buffer layers on cubic textured Ni substrates for superconducting tapes

Reported here is a novel epitaxial buffer layer configuration combined with MgO and CeO2 on biaxially texture Mi substrates for high temperature super conducting (HTS) tapes. The hetero-epitaxial CeO2/MgO/Ni structure was grow n by magnetron sputtering method. After formation of the buffer layers, 0-2 0 and phi scans of x-ray diffraction were used to measure the film in-plane and out-plane orientation, respectively. The deposited CeO2 and MgO buffer layers showed good in-plane alignment.