中国物理B ›› 1996, Vol. 5 ›› Issue (3): 219-224.doi: 10.1088/1004-423X/5/3/009

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GROWTH MODE OF Cu-RICH PARTICLES ON LASER-ABLATED YBa2Cu3O7 THIN FILMS

周岳亮1, 陈正豪1, 吕惠宾1, 崔大复1, 杨国桢1, 杨晔2, 刘军政2, 李林2, 周玉清2   

  1. (1)Institute of Physics, Academia Sinica, Beijing 100080, China; (2)National Laboratory for Superconductivity, Institute of Physics, Academia Sinica, Beijing 100080, China
  • 收稿日期:1995-06-01 出版日期:1996-03-20 发布日期:1996-03-20
  • 基金资助:
    Project supported by the National Center for Research and Development for Superconductivity of China.

GROWTH MODE OF Cu-RICH PARTICLES ON LASER-ABLATED YBa2Cu3O7 THIN FILMS

YANG YE (杨晔), LIU JUN-ZHENG (刘军政), LI LIN (李林), ZHOU YU-QING (周玉清), ZHOU YUE-LIANG (周岳亮), CHEN ZHENG-HAO (陈正豪), Lü HUI-BIN (吕惠宾), CUI DA-FU (崔大复), YANG GUO-ZHEN (杨国桢)   

  1. a Institute of Physics, Academia Sinica, Beijing 100080, China; b National Laboratory for Superconductivity, Institute of Physics, Academia Sinica, Beijing 100080, China
  • Received:1995-06-01 Online:1996-03-20 Published:1996-03-20
  • Supported by:
    Project supported by the National Center for Research and Development for Superconductivity of China.

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摘要： The microstructure of the laser-ablated YBa2Cu3O7 (YBCO) thin film deposited on heated (100) SrTiO3 substrate was examined by transmission electron microscope. The par-ticles on the film mainly consist of CuO and few CuYO2. Most of these non-superconducting particles nucleate on or near the surface of the film and protrude about 100-400 nm in height, A large amount of a-axis YBCO grains also exist in the film, which nucleate at the substrate surface and grow perpendicularly above the c-axis YBCO film. The YBCO thin film deposited under low oxygen pressure has very different microstructure compared with YBCO thin film deposited under high oxygen pressure.

Abstract: The microstructure of the laser-ablated YBa2Cu3O7 (YBCO) thin film deposited on heated (100) SrTiO3 substrate was examined by transmission electron microscope. The par-ticles on the film mainly consist of CuO and few CuYO2. Most of these non-superconducting particles nucleate on or near the surface of the film and protrude about 100-400 nm in height, A large amount of a-axis YBCO grains also exist in the film, which nucleate at the substrate surface and grow perpendicularly above the c-axis YBCO film. The YBCO thin film deposited under low oxygen pressure has very different microstructure compared with YBCO thin film deposited under high oxygen pressure.

中图分类号:  (Nucleation and growth)

  • 68.55.A-
81.15.Fg (Pulsed laser ablation deposition) 68.37.Lp (Transmission electron microscopy (TEM)) 61.72.Mm (Grain and twin boundaries)