SUPERCONDUCTOR WITH TC = 117-K IN THE BI-PB-SR-CA-CU-O SYSTEM

被引：23
|
作者：
TAKADA, J
KITAGUCHI, H
EGI, T
ODA, K
MIURA, Y
MAZAKI, H
IKEDA, Y
HIROI, Z
TAKANO, M
TOMII, Y
机构：
[1] NATL DEF ACAD,DEPT MATH & PHYS,YOKOSUKA,KANAGAWA 239,JAPAN
[2] KYOTO UNIV,INST CHEM RES,UJI,KYOTO 611,JAPAN
[3] KYOTO UNIV,FAC ENGN,DEPT MET SCI & TECHNOL,KYOTO 606,JAPAN
来源：
PHYSICA C | 1990年 / 170卷 / 3-4期
关键词：
16;
D O I：
10.1016/0921-4534(90)90319-A
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The superconducting properties of the so-called 2223 phase in the Pb-Bi-Sr-Ca-Cu-O system have been studied as a function of composition and heat treatment. Tc = 115-117 K has been attained quite reproducibly for starting compositions of Pb/ (Bi+Pb) ≥ 0.30. An increase in the c-axis length from 37.10 Å to 37.21 Å accompanies the rise in Tc from 105 K to 117 K. We suggest that a considerable portion of Pb is located at the Sr-site as seen in Bi2-x+yPbxSr2-yCu1+y/4Oz. © 1990.
引用
收藏
页码：249 / 253
页数：5
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