Preparation of Bi-Pb-Sr-Ca-Cu-O High-Tc Superconductor from Coprecipitated Oxalates

Kiichi Oda; Hitoshi Kitaguchi; Jun Takada; Akiyoshi Osaka; Yoshinari Miura; Yasunori Ikeda; Mikio Takano; Yoshichika Bando; Yoichi Tomii; Yoshio Oka; Naoichi Yamamoto; Yasuo Takeda; Hiromasa Mazaki

doi:10.2497/jjspm.35.959

Preparation of Bi-Pb-Sr-Ca-Cu-O High-Tc Superconductor from Coprecipitated Oxalates

Kiichi Oda, Hitoshi Kitaguchi, Jun Takada, Akiyoshi Osaka, Yoshinari Miura, Yasunori Ikeda, Mikio Takano, Yoshichika Bando, Yoichi Tomii, Yoshio Oka, Naoichi Yamamoto, Yasuo Takeda, Hiromasa Mazaki

Faculty of Engineering

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

In order to prepare the single high-Tc phase in the Bi-Pb-Sr-Ca-Cu-O system, the chemical compositions and the heat treatment conditions were examined. The addition of the excess amount of calcium and the two-step heat treatment were more effective to promote the formation of the high-Tc phase and to shorten the heat treatment time. The sample with the nominal composition of Bi_0.96Pb_0.24Sr_1.0Ca_1.1Cu_1.6O_x heat treated at 850°C for 24h-70h was mostly composed of high-Tc phase. The content of Pb in the sample was considerably decreased by the heat treatment and reduced to 1/2-1/3 of its initial value.

Original language	English
Pages (from-to)	959-964
Number of pages	6
Journal	Journal of the Japan Society of Powder and Powder Metallurgy
Volume	35
Issue number	9
DOIs	https://doi.org/10.2497/jjspm.35.959
Publication status	Published - 1988

ASJC Scopus subject areas

Mechanical Engineering
Industrial and Manufacturing Engineering
Metals and Alloys
Materials Chemistry

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title = "Preparation of Bi-Pb-Sr-Ca-Cu-O High-Tc Superconductor from Coprecipitated Oxalates",

abstract = "In order to prepare the single high-Tc phase in the Bi-Pb-Sr-Ca-Cu-O system, the chemical compositions and the heat treatment conditions were examined. The addition of the excess amount of calcium and the two-step heat treatment were more effective to promote the formation of the high-Tc phase and to shorten the heat treatment time. The sample with the nominal composition of Bi0.96Pb0.24Sr1.0Ca1.1Cu1.6Ox heat treated at 850°C for 24h-70h was mostly composed of high-Tc phase. The content of Pb in the sample was considerably decreased by the heat treatment and reduced to 1/2-1/3 of its initial value.",

author = "Kiichi Oda and Hitoshi Kitaguchi and Jun Takada and Akiyoshi Osaka and Yoshinari Miura and Yasunori Ikeda and Mikio Takano and Yoshichika Bando and Yoichi Tomii and Yoshio Oka and Naoichi Yamamoto and Yasuo Takeda and Hiromasa Mazaki",

year = "1988",

doi = "10.2497/jjspm.35.959",

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volume = "35",

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journal = "Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy",

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number = "9",

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TY - JOUR

T1 - Preparation of Bi-Pb-Sr-Ca-Cu-O High-Tc Superconductor from Coprecipitated Oxalates

AU - Oda, Kiichi

AU - Kitaguchi, Hitoshi

AU - Takada, Jun

AU - Osaka, Akiyoshi

AU - Miura, Yoshinari

AU - Ikeda, Yasunori

AU - Takano, Mikio

AU - Bando, Yoshichika

AU - Tomii, Yoichi

AU - Oka, Yoshio

AU - Yamamoto, Naoichi

AU - Takeda, Yasuo

AU - Mazaki, Hiromasa

PY - 1988

Y1 - 1988

N2 - In order to prepare the single high-Tc phase in the Bi-Pb-Sr-Ca-Cu-O system, the chemical compositions and the heat treatment conditions were examined. The addition of the excess amount of calcium and the two-step heat treatment were more effective to promote the formation of the high-Tc phase and to shorten the heat treatment time. The sample with the nominal composition of Bi0.96Pb0.24Sr1.0Ca1.1Cu1.6Ox heat treated at 850°C for 24h-70h was mostly composed of high-Tc phase. The content of Pb in the sample was considerably decreased by the heat treatment and reduced to 1/2-1/3 of its initial value.

AB - In order to prepare the single high-Tc phase in the Bi-Pb-Sr-Ca-Cu-O system, the chemical compositions and the heat treatment conditions were examined. The addition of the excess amount of calcium and the two-step heat treatment were more effective to promote the formation of the high-Tc phase and to shorten the heat treatment time. The sample with the nominal composition of Bi0.96Pb0.24Sr1.0Ca1.1Cu1.6Ox heat treated at 850°C for 24h-70h was mostly composed of high-Tc phase. The content of Pb in the sample was considerably decreased by the heat treatment and reduced to 1/2-1/3 of its initial value.

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DO - 10.2497/jjspm.35.959

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JO - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy

JF - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy

IS - 9

ER -

Preparation of Bi-Pb-Sr-Ca-Cu-O High-Tc Superconductor from Coprecipitated Oxalates

Abstract

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