TY - JOUR
T1 - The Formation Process of the High-Tc Phase in the Bi-Pb-Sr-Ca-Cu-O System
AU - Ito, Hiroyuki
AU - Ikeda, Yasunori
AU - Hiroi, Zenji
AU - Takano, Mikio
AU - Bando, Yoshichika
AU - Takada, Jun
AU - Egi, Toshio
AU - Kitaguchi, Hitoshi
AU - Oda, Kiichi
PY - 1990
Y1 - 1990
N2 - The formation process of the 37Å (high-Tc) phase in the Bi-Pb-Sr-Ca -Cu-O system has been studied for a nominal composition Bi:Pb:Sr:Ca:Cu=0.9: 0.2:1:1:1.6. From this composition we obtained the high-Tc phase crystallizing homogeneously in the Pb-induced modulation mode as reported previously. The solid phases formed after each firing treatment at above 795°C were identified, and the melting points of various combinations of these were measured. As a result, the lowest liquid formation temperature was found to be 825°C for a combination of the 24Å phase and Ca2PbO4. The liquid formation and formation of the Pb-substituted 30Å phase seems to be the initial step the formation of the 37Å phase.
AB - The formation process of the 37Å (high-Tc) phase in the Bi-Pb-Sr-Ca -Cu-O system has been studied for a nominal composition Bi:Pb:Sr:Ca:Cu=0.9: 0.2:1:1:1.6. From this composition we obtained the high-Tc phase crystallizing homogeneously in the Pb-induced modulation mode as reported previously. The solid phases formed after each firing treatment at above 795°C were identified, and the melting points of various combinations of these were measured. As a result, the lowest liquid formation temperature was found to be 825°C for a combination of the 24Å phase and Ca2PbO4. The liquid formation and formation of the Pb-substituted 30Å phase seems to be the initial step the formation of the 37Å phase.
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U2 - 10.2497/jjspm.37.743
DO - 10.2497/jjspm.37.743
M3 - Article
AN - SCOPUS:0025451366
VL - 37
SP - 743
EP - 746
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
SN - 0532-8799
IS - 5
ER -