采用低压氧气放电辅助的激光淀积方法,原位外延生长出零电阻温度91K,临界电流密度105A/cm2的Y-Ba-Cu-O高温超导薄膜。扫描电镜和X光衍射分析结果表明,薄膜中超导相晶粒的生长具有c轴垂直于表面的择优取向。

High To superconducting Y-Ba-Cu-O film with zero-resistance temperature of 91 K and critical current density of about 105 A/cm2 at 77 K have bsen reproducibly fabricated in situ by plasma-assisted laser ablation method. The SBM micrographs and X-ray diffraction pitterns show that these films are of excellent eptiaxial quality and are oriented mostly with its c-axis perpendicular to the substrate furface.