In-plane alignment of YBa2Cu3O7-y films realized by CeO2 buffer layer on textured Ag{100}⟨001⟩ tapes

Homogeneous in-plane aligned YBa2Cu3O7-y (YBCO) films on long metallic substrates are required for power applications. In order to establish in-plane aligned YBCO films, me have been studying Ag {100}<001> textured tapes buffered with a (001)-oriented CeO2 layer. The YBCO and CeO2 films were deposited by pulsed laser deposition (PLD). The CeO2 deposition rate was 900 Angstrom/min. The CeO2 films on Ag {100}<001> textured substrates were (100)-oriented and highly in-plane aligned. The YBCO films deposited by PLD on CeO2 buffered Ag substrates also have c-asis oriented and good in-plane alignment. T-c and J(c) values of the YBCO films were 81 K and 1x10(4) A/cm(2) at 77 K respectively.