PREPARATION OF HIGH-JC BA2YCU3O7-Y FILMS ON SRTIO3 (100) SUBSTRATES BY THE DIPPING-PYROLYSIS PROCESS AT 750-DEGREES-C

被引：23

作者：

MANABE, T

KONDO, W

MIZUTA, S

KUMAGAI, T

机构：

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

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS | 1991年 / 30卷 / 9B期

关键词：

BA2YCU3O7-Y SUPERCONDUCTOR; FILM; DIPPING-PYROLYSIS PROCESS; OXYGEN PARTIAL PRESSURE; LOW TEMPERATURE; ANNEALING; CRITICAL CURRENT DENSITY; S-GAMMA-TIO3;

D O I：

10.1143/JJAP.30.L1641

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Superconducting Ba2YCu3O7-y films were prepared on S-gamma-TiO3 (100) substrates by the dipping-pyrolysis process using metal acetylacetonates as starting materials. Prefired films were heat-treated at 750-degrees-C under a low-oxygen partial pressure (p(O2) = 2 x 10(-4) atm) and then annealed in O2. The resulting films showed high superconducting transition temperatures; both of the values of T(c,onset)(s) and T(c,zero)(r) were 89 K. The current-voltage characteristics of the films were measured at 74-86 K. The critical current at 77 K and 0 T was 2.4 A, which corresponds to the critical-current density of 3.9 x 10(5) A/cm2.

引用

页码：L1641 / L1643

页数：3

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