Epitaxial CeO sub(2)/MgO buffer layers on cubic textured Ni substrates for superconducting tapes

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