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

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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 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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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 › peer-review

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

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.",

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

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doi = "10.2497/jjspm.35.1003",

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AU - Osaka, Akiyoshi

AU - Miura, Yoshinari

AU - Ikeda, Yasunori

AU - Takano, Mikio

AU - Oka, Yoshio

AU - Yamamoto, Naoichi

AU - Tomii, Yoichi

AU - Takeda, Yasuo

PY - 1988

Y1 - 1988

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

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