PREPARATION OF SUPERCONDUCTING BA2YCU3O7-Y/AG COMPOSITE FILMS BY THE DIPPING-PYROLYSIS PROCESS USING METAL NAPHTHENATES AT 750-DEGREES-C

被引：9

作者：

KUMAGAI, T

MANABE, T

TSUNODA, T

KONDO, W

MIZUTA, S

机构：

[1] National Chemical Laboratory for Industry, Ibaraki, 305, Tsukuba

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 1991年 / 30卷 / 7B期

关键词：

BA2YCU3O7-Y SUPERCONDUCTOR; AG; COMPOSITE; FILM; DIPPING-PYROLYSIS PROCESS; METAL NAPHTHENATES; OXYGEN PARTIAL PRESSURE; LOW TEMPERATURE;

D O I：

10.1143/JJAP.30.L1268

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Superconducting Ba2YCu3O7-y/Ag composite films were prepared on yttria-stabilized zirconia substrates by the dipping-pyrolysis process. Metal naphthenates were used as starting materials. Homogeneous Ba-Y-Cu-Ag solutions with (Ag/BYCO) molar ratios of 0-1.0 were spin-coated onto the substrates and pyrolyzed at 500-degrees-C. Subsequently, these prefired films were heat-treated at 750-degrees-C under a low-oxygen partial pressure (= 2 x 10(-4) atm) followed by higher-p(O2) annealing. High superconducting transition temperatures, T(c,onset)(s)'s and T(c,zero)(r)'s, of 88 K-90 K were obtained for the composite films with (Ag/BYCO) molar ratios of 0.1-0.5.

引用

收藏

页码：L1268 / L1270

页数：3

相关论文

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