PROPERTIES OF Y1BA2CU3O7-X SUPERCONDUCTING THIN-FILMS PREPARED BY REACTIVE EVAPORATION METHOD

被引：9

作者：

CHANG, HJ

WATANABE, Y

DOSHIDA, Y

SHIMIZU, K

OKAMOTO, Y

AKIHAMA, R

SONG, JT

机构：

[1] NATL DEF ACAD, DEPT MAT SCI & ENGN, YOKOSUKA, KANAGAWA 239, JAPAN

[2] HANYANG UNIV, DEPT MAT ENGN, SEOUL 133791, SOUTH KOREA

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 1990年 / 29卷 / 12期

关键词：

SUPERCONDUCTING THIN FILM; REACTIVE EVAPORATION; OXYGEN PARTIAL PRESSURE; LATTICE PARAMETER-C; YB-CO; PEROVSKITE STRUCTURE;

D O I：

10.1143/JJAP.29.L2207

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The superconducting YBa2Cu3O7-x (YBCO) thin films on MgO(100) substrates were prepared by a reactive evaporation method. Superconducting transition temperature and crystal quality were examined as a function of the substrate temperature (T(s)) and the oxygen partial pressure (P(o2)). The as-grown thin films at the substrate temperature of 620-degrees-C exhibited a zero resistance temperature (T(c)zero) of 83 K with the onset (T(c)onset) temperature of 88 K under the P(o2) of 2 X 10(-3) Torr. The lattice parameter c was about 11.74 angstrom for the as-grown film with T(c)zero of 80 K and was shortened to about 11.70 angstrom by the post-annealing at 900-degrees-C for 10 min in O2 flow, although T(c)zero was not changed. This phenomena may be ascribed to the deficiency of oxygen in the CuO2 plane of the YBCO layered perovskite structure.

引用

收藏

页码：L2207 / L2210

页数：4

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