Formation of the High-Tc Phase in the Lead-Rich Sample in the Bi-Pb-Sr-Ca-Cu-O System

Jun Takada; Fumine Shitani; Hitoshi Kitaguchi; Kiichi Oda; Akiyoshi Osaka; Yoshinari Miura

doi:10.2497/jjspm.37.108

Formation of the High-Tc Phase in the Lead-Rich Sample in the Bi-Pb-Sr-Ca-Cu-O System

Jun Takada, Fumine Shitani, Hitoshi Kitaguchi, Kiichi Oda, Akiyoshi Osaka, Yoshinari Miura

School of Engineering

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

Abstract

The formation of the high-Tc phase and the electrical property have been studied for the Pb-rich sample with a nominal composition of Bi:Pb:Sr:Ca:Cu= 0.726:0.374:1.0:1.0:1.65 sintered at temperature range between 840 and 853°C. The sample calcined at 800°C for 12h consists of a large amount of Ca₂PbO₄ and CuO beside the low-Tc phase. The low-Tc phase increases rapidly in an early stage of sintering and then decreases through a maximum as sintering is extended. On the other hand, the high-Tc phase increases much gradually in comparison with that in the Pb-poor sample of Bi:Pb:Sr:Ca:Cu=0.96:0.24:1.0:l.l:1.6 reported previously. The samples sintered in the temperature range from 845 to 853°C show Tc of about 110K, independent of sintering temperature.

Original language	English
Pages (from-to)	108-113
Number of pages	6
Journal	Journal of the Japan Society of Powder and Powder Metallurgy
Volume	37
Issue number	1
DOIs	https://doi.org/10.2497/jjspm.37.108
Publication status	Published - 1990

ASJC Scopus subject areas

Mechanical Engineering
Industrial and Manufacturing Engineering
Metals and Alloys
Materials Chemistry

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title = "Formation of the High-Tc Phase in the Lead-Rich Sample in the Bi-Pb-Sr-Ca-Cu-O System",

abstract = "The formation of the high-Tc phase and the electrical property have been studied for the Pb-rich sample with a nominal composition of Bi:Pb:Sr:Ca:Cu= 0.726:0.374:1.0:1.0:1.65 sintered at temperature range between 840 and 853°C. The sample calcined at 800°C for 12h consists of a large amount of Ca2PbO4 and CuO beside the low-Tc phase. The low-Tc phase increases rapidly in an early stage of sintering and then decreases through a maximum as sintering is extended. On the other hand, the high-Tc phase increases much gradually in comparison with that in the Pb-poor sample of Bi:Pb:Sr:Ca:Cu=0.96:0.24:1.0:l.l:1.6 reported previously. The samples sintered in the temperature range from 845 to 853°C show Tc of about 110K, independent of sintering temperature.",

author = "Jun Takada and Fumine Shitani and Hitoshi Kitaguchi and Kiichi Oda and Akiyoshi Osaka and Yoshinari Miura",

year = "1990",

doi = "10.2497/jjspm.37.108",

language = "English",

volume = "37",

pages = "108--113",

journal = "Journal of the Japan Society of Powder and Powder Metallurgy",

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T1 - Formation of the High-Tc Phase in the Lead-Rich Sample in the Bi-Pb-Sr-Ca-Cu-O System

AU - Takada, Jun

AU - Shitani, Fumine

AU - Kitaguchi, Hitoshi

AU - Oda, Kiichi

AU - Osaka, Akiyoshi

AU - Miura, Yoshinari

PY - 1990

Y1 - 1990

N2 - The formation of the high-Tc phase and the electrical property have been studied for the Pb-rich sample with a nominal composition of Bi:Pb:Sr:Ca:Cu= 0.726:0.374:1.0:1.0:1.65 sintered at temperature range between 840 and 853°C. The sample calcined at 800°C for 12h consists of a large amount of Ca2PbO4 and CuO beside the low-Tc phase. The low-Tc phase increases rapidly in an early stage of sintering and then decreases through a maximum as sintering is extended. On the other hand, the high-Tc phase increases much gradually in comparison with that in the Pb-poor sample of Bi:Pb:Sr:Ca:Cu=0.96:0.24:1.0:l.l:1.6 reported previously. The samples sintered in the temperature range from 845 to 853°C show Tc of about 110K, independent of sintering temperature.

AB - The formation of the high-Tc phase and the electrical property have been studied for the Pb-rich sample with a nominal composition of Bi:Pb:Sr:Ca:Cu= 0.726:0.374:1.0:1.0:1.65 sintered at temperature range between 840 and 853°C. The sample calcined at 800°C for 12h consists of a large amount of Ca2PbO4 and CuO beside the low-Tc phase. The low-Tc phase increases rapidly in an early stage of sintering and then decreases through a maximum as sintering is extended. On the other hand, the high-Tc phase increases much gradually in comparison with that in the Pb-poor sample of Bi:Pb:Sr:Ca:Cu=0.96:0.24:1.0:l.l:1.6 reported previously. The samples sintered in the temperature range from 845 to 853°C show Tc of about 110K, independent of sintering temperature.

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Formation of the High-Tc Phase in the Lead-Rich Sample in the Bi-Pb-Sr-Ca-Cu-O System

Abstract

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