SUPERCONDUCTIVITY IN EPITAXIAL-FILMS OF THE OXYCARBONATE SR2CUO2(CO3) CONVERTED FROM INFINITE-LAYER SRCUO2 BY THERMAL-PROCESSING

被引：9

作者：

FEENSTRA, R ^{[1
]}

BUDAI, JD ^{[1
]}

CHRISTEN, DK ^{[1
]}

KAWAI, T ^{[1
]}

机构：

[1] OSAKA UNIV,INST SCI & IND RES,IBARAKI,OSAKA 567,JAPAN

来源：

APPLIED PHYSICS LETTERS | 1995年 / 67卷 / 09期

关键词：

D O I：

10.1063/1.114523

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The conversion of semiconductive SrCuO2 ''infinite layer'' epitaxial films into a metallic and superconducting (T-c similar or equal to 30 K) oxycarbonate phase related to Sr2CuO2(CO3) has been induced by thermal processing in oxidizing ambient containing a small amount of CO2, Ion beam analysis using the resonant C-12(p,p)C-12 elastic backscattering cross section for protons incident at 1.73 MeV confirms the presence of substitutional C in the converted perovskite lattice. Comparison of the threshold CO2 partial pressure with thermodynamic stability data for SrCO3 suggests that the conversion is initiated by the high affinity of Sr(O) for CO2. (C) 1995 American Institute of Physics.

引用

页码：1310 / 1312

页数：3

共 13 条

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