Preparation of Bi-Pb-Sr-Ca-Cu-O high-Tc superconductor form coprecipitated oxalate

被引：0

作者：

Oda, Kiichi

Kitaguchi, Hitoshi

Takada, Jun

Osaka, Akiyoshi

Miura, Yoshinari

Ikeda, Yasunori

Takano, Mikio

Bando, Yoshichika

Yamamoto, Naoichi

Oka, Yoshio

Tomii, Yoichi

机构：

来源：

Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy | 1988年 / 35卷 / 05期

关键词：

Bismuth Compounds--Low Temperature Properties - Ceramic Materials--Low Temperature Properties - Copper Oxide--Low Temperature Properties - Electric Conductivity--Low Temperature Effects - X-Ray Analysis;

D O I：

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摘要：

Partial substitution of Pb for Bi in the Bi-Sr-Ca-Cu-O system increases the volume fraction of the high-Tc phase when both the starting materials (coprecipitated oxalate) and the heating process are appropriate. A sharp powder X-ray diffraction pattern of the high-Tc phase was obtained from particles 10-20 μm wide and 0.5μm thick typically. The electrical resistance dropped to zero at 107k within the experimental limit of 10-6Ω. A large diamagnetic response in the ac susceptibility due to the Meissner effect was seen below 120K. The fraction of the high-Tc phase over the low-Tc phase was roughly 9/1 in volume.

引用

页码：424 / 427