Preparation of oriented Bi‐Ca‐Sr‐Cu‐O thin films using pulsed laser deposition
Preparation of oriented Bi‐Ca‐Sr‐Cu‐O thin films using pulsed laser deposition
复制标题
脉冲激光沉积制备定向 Bi-Ca-Sr-Cu-O 薄膜
DOI：
10.1063/1.99909
复制
发表时间：
1988
影响因子：
4
通讯作者：
T. Geballe
中科院分区：
文献类型：
--
作者：
D. Fork;J. Boyce;F. Ponce;R. I. Johnson;G. B. Anderson;G. Connell;C. Eom;T. Geballe
采用脉冲准分子激光蒸发技术在[100] SrTiO 3基片上制备了Bi-Ca-Sr-Cu-O薄膜。在室温下在1 mTorr氧气中沉积，然后在氧气中进行875 °C退火，产生超导膜，在80 K下电阻为零，在110 K附近电阻率下降，暗示存在另一种超导相。透射电子显微镜表明，薄膜与衬底外延，与一个突然的和平面的界面边界。观察到的晶体结构与体材料的衍射结果一致。
Oriented c‐axis thin films of Bi‐Ca‐Sr‐Cu‐O on [100] SrTiO3 substrates have been fabricated using the pulsed excimer laser evaporation technique. Deposition at room temperature in 1 mTorr oxygen followed by an 875 °C anneal in oxygen yields superconducting films with zero resistance at 80 K and a resistivity drop near 110 K, hinting at the presence of another superconducting phase. Transmission electron microscopy shows that the films are epitaxial with the substrate, with an abrupt and planar interface boundary. The observed crystal structure is consistent with diffraction results on bulk materials.