【摘要】 研究了不同晶向的 ZrO₂（YSZ）与 YBa₂Cu₃O_?超导膜的相互作用。结果表明:衬底 ZrO₂的晶向对YBa₂Cu₃O_7-δ晶粒取向有明显影响,在<100>ZrO₂上制备的超导膜,超导晶粒 c 轴平行于衬底表面,出现择优取向;在 Y-Ba-Cu-O/ZrO₂上铜晶粒的析出是由于超导膜与 ZrO₂界面反应引起的;用俄歇能谱（AES）和背散射技术（RBS）都观察到了 Ba、Cu 原子向衬底的内扩散;同时,实验证实了在 ZrO₂衬底上热蒸发（?）薄层 Ag 对衬底反应有强压制作用,并在 YBa₂Cu₃O_7-δ/Ag/ZrO₂样品中观察到了超导晶粒 c 轴在垂直于衬底方向出现择优取向。更多还原

【Abstract】 The interactions between YBa₂Cu₃O_7-δ superconducting films and ZrO₂ substra-tes with different crystal orientations were investigated.Our results show that cry-stal orientations of substrates influence the orientations of YBa₂Cu₃O_7-δ crystals,whose c-axes have a preferential orientation parallel to the surface of 〈100〉 ZrO₂substrates.The copper segregation in Y-Ba-Cu-O/ZrO₂ films results from the inter-actions between the superconducting films and the substrates.Y,Ba and Cu atomsdiffusing into the substrates were detected by AES and RBS techniques.A thin sil-ver film evaporated onh ZrO₂ substrate as a buffer layer effectively slows down oreliminates the substrate interactions.The strong c-axis preferential orientation per-pendicular to the substrate surface has been observed from the YBa₂Cu₃O_7-δ/Ag/ZrO₂samples.更多还原