Orientation control and electrical properties of YBa_2Cu_3O_(7-δ) deposited onto CeO_2 buffer films by laser chemical vapor deposition using liquid source precursors

摘要

CeO_2 and YBa_2Cu_3O_(7-δ) (YBCO) films were deposited onto multilayer-coated Hastelloy C276 tape by laser chemical vapor deposition using liquid source precursors. The effect of the thickness of the CeO_2 buffer film grown at 720 K on the orientation and electrical properties of the YBCO has been investigated. The optimal thickness of the CeO_2 layer was found to be 97 nm resulting in the highest critical temperature of 90 K and a critical current density of 0.6 MA cm~(-2). The deposition rate of the YBCO films was approximately 7 μm h~(-1).