Growth, microstructures, and superconductivity of Bi2-xPbxSr2Ca1-yGdyCu2O8+z single crystals

被引：6

作者：

Wang, XL ^{[1
]}

Takayama-Muromachi, E

Li, AH

Cheng, ZX

Keshavarzi, S

Qin, MJ

Dou, SX

机构：

[1] Univ Wollongong, Inst Superconducting & Elect Mat, Wollongong, NSW 2522, Australia

[2] Natl Inst Mat Sci, Superconducting Mat Ctr, New Mat Grp, Tsukuba, Ibaraki 3050044, Japan

来源：

JOURNAL OF APPLIED PHYSICS | 2004年 / 95卷 / 11期

关键词：

D O I：

10.1063/1.1667412

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Bi2-xPbxSr2Ca1-yGdyCu2O8+delta (x=0.34 and y=0.18, 0.34) crystals were grown by the self-flux method. The crystals have a cleavage thickness of only half unit cell up to two unit cells with T-c only dropping 20 K as y is increased from 0.18 to 0.34 for as-grown crystals. However, T-c increased to almost the same value of about 80 K after annealing in air regardless of the Gd doping levels. The co-doping produced enhanced flux pinning compared to the sole Gd doping. A secondary peak effect presented in crystals with x=0.34 and y=0.34 was explained by phase segregations containing Gd-rich clusters. (C) 2004 American Institute of Physics.

引用

页码：6699 / 6701

页数：3

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