【摘要】 Ag是目前唯一不需要隔离层的高温超导基带材料,而且研究表明,在YBCO中掺入适量的Ag,将有利于超导性能的改善和表面电阻的降低.本研究采用准分子激光法(PLD),在经不同表面处理的{110}<110>取向的双轴织构银基带上直接沉积了YBCO薄膜,得到了强双轴织构的超导膜,系统地研究了银基带中的孪晶、晶界等缺陷对YBCO超导微观组织的影响.更多还原

【Abstract】 Ag is theunique HTSC ribbon metal without any buffer layer. Some researches have reported that Ag doping in YBCO can improve the mechanical and electrical properties of oxide superconductors. Inthis paper, superconducting YBCO films were grown by PLD on {110}<110> textured Ag tapes. A strong biaxially textured superconducting film was obtained. The effects of twin and crystal boundaries on the microcosmic structures of YBCO thin films were investigated.更多还原