Phase diagram for (Tl0.5Pb0.5)(Ba0.2Sr0.8)2Ca2Cu3O8+δ (Tl-1223) polycrystalline sample with optimum oxygen content

被引：0

作者：

Stavale, FL

Gonzalez, JL

Yugue, ES

Baggio-Saitovitch, E

机构：

[1] URCA, Ctr Brasileiro Pesquisas Fis, Rio De Kaneiro, Brazil

[2] Univ Fed Fluminense, Niteroi, RJ, Brazil

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2004年 / 408卷

关键词：

D O I：

10.1016/j.physc.2004.02.040

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The magnetic field-temperature phase diagram (B-T) of a optimally doped sample belong to (Tl0.5Pb0.5)(Ba0.2Sr0.8)(2)Ca2Cu3O8+delta was studied thought resistivity and magnetization measurements. The phase diagram of this compound was built identifying four characteristic regions inside it. The thermally activated flux flow region (TAFF) followed both, the Yeshurum-Malozemoff and Tinkham's models. The magnetic field dependence of U-eff does scale with B-0.5 signalising pinning mechanism similar to the ones found in Bi-2212. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：54 / 55

页数：2

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