低温工学
Online ISSN : 1880-0408
Print ISSN : 0389-2441
ISSN-L : 0389-2441
Bi-Sr-Ca-Cu酸化物超電導体へのPb酸化物添加効果
今尾 浩也岸田 悟徳高 平蔵
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1996 年 31 巻 12 号 p. 646-652

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We prepared a Bi-based superconductor using a variety of Pb-oxides and found that the samples prepared at temperatures above 830°C using Pb-oxides contained the 2223-phase; especially, the samples prepared at temperatures above 855°C using Pb2O3 showed a zero-resistance temperature above 90K. The XRD results showed that the volume fraction of the 2223-phase superconductor was increased by doping with Pb2O3. The chemical bonding nature of the samples which prepared using Pb2O3 was different from those of the samples prepared using other Pb-oxides. The results may indicate that Pb2O3 has a peculiar effect on the formation of a 2223-phase.

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