(TL, PB, BI)SR2CA2CU3OZ SUPERCONDUCTORS WITH ZERO RESISTANCE AT 120-K

被引：19

作者：

KANEKO, T

WADA, T

YAMAUCHI, H

TANAKA, S

机构：

[1] Superconductivity Research Laboratory, International Superconductivity Technology Center, Koto-Ku, Tokyo 135

来源：

APPLIED PHYSICS LETTERS | 1990年 / 56卷 / 13期

关键词：

D O I：

10.1063/1.103174

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have synthesized new superconductors of nearly single phase with zero-resistance temperatures around 120 K employing a novel method for sintering. The samples included a nominal composition of (Tl 0.64Pb0.2Bi0.16)Sr2Ca 3Cu4Oz. This sample was prepared from the mixture of presynthesized (Tl0.64Pb0.2Bi 0.16)Sr2CaCu2Oz (1212 phase), CaO, and CuO powders. The mixed powder was sintered at 920°C in O2 gas and post-annealed at 400-600°C in O2 gas. The powder x-ray diffraction revealed that the sample was isostructural with the Tl-based (Tl, Pb, Bi)Sr2Ca2Cu3Oz (1223 phase). The sample exhibited a sharp superconducting transition at Tonset c=125 K and TR=0c=120 K and the superconducting diamagnetic signal at 10 K was about 20% of a full Meissner effect.

引用

页码：1281 / 1283

页数：3

共 6 条

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