Relation of Deposition Condition with Microstructure of YBCO Film an YSZ Buffer Layer on Metallic Substrate

摘要

Microstructures of two Yba_2 Cu_3 O_7-y (YBCO) film deposited on metal substrate (Hastelloy-C) with yttria-stabilized zirconia (YSZ) buffer layer were studied comparatively. Relation of microstructure with deposition condition was also been discussed. The YSZ buffer flayer with a low depositing rate is dense, even, textured and well-bonded to the substrate. On the contrary, the YSZ layer deposited with a high rate is loose and bonded badly to the substrate. Property and surface grain size of YBCO film fare related to the substrate temperature (T_s) in the deposition process.