Sintering effect on Bi(Pb) Sr Ca Cu O high-Tc superconductors

被引：5
|
作者：
Anis-ur-Rehman, M [1 ]
Maqsood, M
Ahmed, N
Maqsood, A
Anwar-ul-Haq
机构：
[1] Quaid I Azam Univ, Dept Phys, Thermal Phys Lab, Islamabad, Pakistan
[2] Dr AQ Khan Res Labs, Div Met, Kahuta, Rawalpindi, Pakistan
来源：
JOURNAL OF MATERIALS SCIENCE | 1998年 / 33卷 / 07期
关键词：
D O I：
10.1023/A:1004336801272
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
D.c. electrical resistivity, a. c. magnetic susceptibility and X-ray diffraction techniques have been used to investigate the superconductive and structural properties in the systems Bi1.6Pb0.4Sr2Ca2Cu4.5OY and Bi1.6Pb0.2Sr2Ca2Cu4Oy. It is observed that the preparation method and heating methodology affect the properties of materials. Step sintering is of greater value for magnetic properties of the samples whereas prolonged sintering makes the systems more metallic and a smooth variation in resistivity with temperature is observed. The superconducting phase identified by X-ray diffraction analysis is mainly the high-T-c phase in all the samples. Resistivity and susceptibility measurements also indicate primarily the high-T-c phase. (C) 1998 Chapman & Hall.
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收藏
页码：1789 / 1793
页数：5
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