SYNTHESIS OF 80-K SUPERCONDUCTING YBA2CU4O8 VIA A NOVEL ROUTE

被引：52

作者：

BALACHANDRAN, U ^{[1
]}

BIZNEK, ME ^{[1
]}

TOMLINS, GW ^{[1
]}

VEAL, BW ^{[1
]}

POEPPEL, RB ^{[1
]}

机构：

[1] ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439

来源：

PHYSICA C | 1990年 / 165卷 / 3-4期

基金：

美国国家科学基金会;

关键词：

15;

D O I：

10.1016/0921-4534(90)90214-Y

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The YBa2Cu4O8 ("124") superconductor with transition temperature at 80 K is synthesized via a solid state reaction for 1 h at 800°C in flowing oxygen with a total pressure of about 2.7 X 102 Pa, followed by cooling and annealing in oxygen at ambient pressure for 20 h at 750°C. This procedure has produced orthorhombic 124 as the main phase with YBa2Cu3Ox ("123") as a minor impurity phase. Annealing the as-calcined powder in flowing oxygen at 800°C for 24 h under ambient pressure improved the phase purity and nearly phase-pure 124, determined by X-ray diffraction and magnetization measurements, has been obtained. © 1990.

引用

页码：335 / 339

页数：5

共 15 条

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