Effect of Ba Addition on the Formation of the High-Tc Phase in the Bi, Pb-Sr-Ca-Cu-O System

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

doi:10.2497/jjspm.35.1003

Effect of Ba Addition on the Formation of the High-Tc Phase in the Bi, Pb-Sr-Ca-Cu-O System

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

Faculty of Engineering

Research output: Contribution to journal › Article

3 Citations (Scopus)

Abstract

The effect of Ba addition on the formation and the critical temperature Tc of the high-Tc superconductor in the Bi, Pb-Sr-Ca-Cu-O system was studied. A series of samples Bi_0.7Pb_0.3Sr_1-αBa_αCaCu_1.8O_x were prepared by the conventional ceramic method. High-Tc phase (c ≅ 37Å) was formed without coexistance of low-Tc phase (c ≅ 30Å) and 24Å phase in the sample of α ≤ 0.5 by the heat treatment at 845°C for 45-140h even though BaPb_0.75Bi_0.25O₃ and (Sr, Ca)₃Cu₅O_x were a little remained. The electrical resistance of the sample with a composition of α=0.1 heated at 845°C for 140h dropped to zero at 105K and diamagnetic response was also observed. It was found that the addition of a small amount of Ba promoted the formation of high-Tc phase but Ba²⁺ ion was hardly substituted in the high-Tc phase.

Original language	English
Pages (from-to)	1003-1009
Number of pages	7
Journal	Journal of the Japan Society of Powder and Powder Metallurgy
Volume	35
Issue number	9
DOIs	https://doi.org/10.2497/jjspm.35.1003
Publication status	Published - 1988

ASJC Scopus subject areas

Mechanical Engineering
Industrial and Manufacturing Engineering
Metals and Alloys
Materials Chemistry

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Takada, J., Kitaguchi, H., Oda, K., Osaka, A., Miura, Y., Ikeda, Y., Takano, M., Oka, Y., Yamamoto, N., Tomii, Y., & Takeda, Y. (1988). Effect of Ba Addition on the Formation of the High-Tc Phase in the Bi, Pb-Sr-Ca-Cu-O System. Journal of the Japan Society of Powder and Powder Metallurgy, 35(9), 1003-1009. https://doi.org/10.2497/jjspm.35.1003

Effect of Ba Addition on the Formation of the High-Tc Phase in the Bi, Pb-Sr-Ca-Cu-O System. / Takada, Jun; Kitaguchi, Hitoshi; Oda, Kiichi; Osaka, Akiyoshi; Miura, Yoshinari; Ikeda, Yasunori; Takano, Mikio; Oka, Yoshio; Yamamoto, Naoichi; Tomii, Yoichi; Takeda, Yasuo.

In: Journal of the Japan Society of Powder and Powder Metallurgy, Vol. 35, No. 9, 1988, p. 1003-1009.

Research output: Contribution to journal › Article

Takada, Jun ; Kitaguchi, Hitoshi ; Oda, Kiichi ; Osaka, Akiyoshi ; Miura, Yoshinari ; Ikeda, Yasunori ; Takano, Mikio ; Oka, Yoshio ; Yamamoto, Naoichi ; Tomii, Yoichi ; Takeda, Yasuo. / Effect of Ba Addition on the Formation of the High-Tc Phase in the Bi, Pb-Sr-Ca-Cu-O System. In: Journal of the Japan Society of Powder and Powder Metallurgy. 1988 ; Vol. 35, No. 9. pp. 1003-1009.

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abstract = "The effect of Ba addition on the formation and the critical temperature Tc of the high-Tc superconductor in the Bi, Pb-Sr-Ca-Cu-O system was studied. A series of samples Bi0.7Pb0.3Sr1-αBaαCaCu1.8Ox were prepared by the conventional ceramic method. High-Tc phase (c ≅ 37{\AA}) was formed without coexistance of low-Tc phase (c ≅ 30{\AA}) and 24{\AA} phase in the sample of α ≤ 0.5 by the heat treatment at 845°C for 45-140h even though BaPb0.75Bi0.25O3 and (Sr, Ca)3Cu5Ox were a little remained. The electrical resistance of the sample with a composition of α=0.1 heated at 845°C for 140h dropped to zero at 105K and diamagnetic response was also observed. It was found that the addition of a small amount of Ba promoted the formation of high-Tc phase but Ba2+ ion was hardly substituted in the high-Tc phase.",

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AU - Miura, Yoshinari

AU - Ikeda, Yasunori

AU - Takano, Mikio

AU - Oka, Yoshio

AU - Yamamoto, Naoichi

AU - Tomii, Yoichi

AU - Takeda, Yasuo

PY - 1988

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N2 - The effect of Ba addition on the formation and the critical temperature Tc of the high-Tc superconductor in the Bi, Pb-Sr-Ca-Cu-O system was studied. A series of samples Bi0.7Pb0.3Sr1-αBaαCaCu1.8Ox were prepared by the conventional ceramic method. High-Tc phase (c ≅ 37Å) was formed without coexistance of low-Tc phase (c ≅ 30Å) and 24Å phase in the sample of α ≤ 0.5 by the heat treatment at 845°C for 45-140h even though BaPb0.75Bi0.25O3 and (Sr, Ca)3Cu5Ox were a little remained. The electrical resistance of the sample with a composition of α=0.1 heated at 845°C for 140h dropped to zero at 105K and diamagnetic response was also observed. It was found that the addition of a small amount of Ba promoted the formation of high-Tc phase but Ba2+ ion was hardly substituted in the high-Tc phase.

AB - The effect of Ba addition on the formation and the critical temperature Tc of the high-Tc superconductor in the Bi, Pb-Sr-Ca-Cu-O system was studied. A series of samples Bi0.7Pb0.3Sr1-αBaαCaCu1.8Ox were prepared by the conventional ceramic method. High-Tc phase (c ≅ 37Å) was formed without coexistance of low-Tc phase (c ≅ 30Å) and 24Å phase in the sample of α ≤ 0.5 by the heat treatment at 845°C for 45-140h even though BaPb0.75Bi0.25O3 and (Sr, Ca)3Cu5Ox were a little remained. The electrical resistance of the sample with a composition of α=0.1 heated at 845°C for 140h dropped to zero at 105K and diamagnetic response was also observed. It was found that the addition of a small amount of Ba promoted the formation of high-Tc phase but Ba2+ ion was hardly substituted in the high-Tc phase.

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