EFFECTS OF HEAT-TREATMENT CONDITIONS ON THE CRITICAL CURRENT DENSITIES OF BA2YCU3O7-Y FILMS PREPARED BY THE DIPPING-PYROLYSIS PROCESS

被引：41

作者：

KUMAGAI, T ^{[1
]}

MANABE, T ^{[1
]}

KONDO, W ^{[1
]}

MINAMIUE, H ^{[1
]}

MIZUTA, S ^{[1
]}

机构：

[1] NIHON KAGAKU SANGYO,TAITO,TOKYO 110,JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 1990年 / 29卷 / 06期

关键词：

Ba[!sub]2[!/sub] YCu[!sub]3[!/sub]0 [!sub]7[!/sub]-Y superconductor; Bac0[!sub]3[!/sub]-y [!sub]2[!/sub]0 [!sub]3[!/sub]-CuO mixture; Critical current density; Dipping-pyrolysis process; Film; Metal acetylacetonates; Oxygen partial pressure; Reaction;

D O I：

10.1143/JJAP.29.L940

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The effects of temperature and atmosphere on the BYCO formation reaction of BaCO3, Y2O3 and CuO, prepared by the pyrolysis of metal acetylacetonate solution, were examined by TG-DTA, XRD and resistivity measurement. This reaction was found to proceed readily below 900°C under low oxygen partial pressures. Superconducting Ba2YCu3O7-y films with Tc,zero≅90 K and Jc(77 K)=300–400 A/cm2 were prepared by the dipping-pyrolysis process using the above solution through heat treatments at 820°–880°C under controlled low oxygen partial pressures of ρ(O2)=1×10-3–2×10-4 atm followed by O2 annealing. © 1990 The Japan Society of Applied Physics.

引用

页码：L940 / L942

页数：3