Novel electrochemical route for reduction of superconducting Bi 2Sr 2CaCu 2O 8+δ

Motohide Matsuda; Hideki Tamada; Kimihiro Yamashita; Takao Umegaki; Michihiro Miyake

Novel electrochemical route for reduction of superconducting Bi ₂Sr ₂CaCu ₂O _8+δ

Motohide Matsuda, Hideki Tamada, Kimihiro Yamashita, Takao Umegaki, Michihiro Miyake

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Abstract

A novel electrochemical route was developed for reduction of the superconducting Bi ₂Sr ₂CaCu ₂O _8+δ compound (Bi-2212) in the over-hole-doped state, which was undertaken employing an electrolyte solution consisting of benzoic acid dissolved in acetone. The reduction gave rise to enhancement of the critical temperature (T _C) of Bi-2212 up to ∼90 K. This reduction effect on T _C corresponded to the effect of annealing at elevated temperatures in reducing atmospheres. It appears that protons from the benzoic acid carboxyl groups were responsible for the reduction of the Bi-2212. Structural stability of the electrochemically reduced Bi-2212 was different from that of Bi-2212 annealed in reducing atmospheres.

Original language	English
Pages (from-to)	1032-1034
Number of pages	3
Journal	Journal of the American Ceramic Society
Volume	80
Issue number	4
Publication status	Published - Apr 1 1997

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

Cite this

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title = "Novel electrochemical route for reduction of superconducting Bi 2Sr 2CaCu 2O 8+δ ",

abstract = "A novel electrochemical route was developed for reduction of the superconducting Bi 2Sr 2CaCu 2O 8+δ compound (Bi-2212) in the over-hole-doped state, which was undertaken employing an electrolyte solution consisting of benzoic acid dissolved in acetone. The reduction gave rise to enhancement of the critical temperature (T C) of Bi-2212 up to ∼90 K. This reduction effect on T C corresponded to the effect of annealing at elevated temperatures in reducing atmospheres. It appears that protons from the benzoic acid carboxyl groups were responsible for the reduction of the Bi-2212. Structural stability of the electrochemically reduced Bi-2212 was different from that of Bi-2212 annealed in reducing atmospheres.",

author = "Motohide Matsuda and Hideki Tamada and Kimihiro Yamashita and Takao Umegaki and Michihiro Miyake",

year = "1997",

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T1 - Novel electrochemical route for reduction of superconducting Bi 2Sr 2CaCu 2O 8+δ

AU - Matsuda, Motohide

AU - Tamada, Hideki

AU - Yamashita, Kimihiro

AU - Umegaki, Takao

AU - Miyake, Michihiro

PY - 1997/4/1

Y1 - 1997/4/1

N2 - A novel electrochemical route was developed for reduction of the superconducting Bi 2Sr 2CaCu 2O 8+δ compound (Bi-2212) in the over-hole-doped state, which was undertaken employing an electrolyte solution consisting of benzoic acid dissolved in acetone. The reduction gave rise to enhancement of the critical temperature (T C) of Bi-2212 up to ∼90 K. This reduction effect on T C corresponded to the effect of annealing at elevated temperatures in reducing atmospheres. It appears that protons from the benzoic acid carboxyl groups were responsible for the reduction of the Bi-2212. Structural stability of the electrochemically reduced Bi-2212 was different from that of Bi-2212 annealed in reducing atmospheres.

AB - A novel electrochemical route was developed for reduction of the superconducting Bi 2Sr 2CaCu 2O 8+δ compound (Bi-2212) in the over-hole-doped state, which was undertaken employing an electrolyte solution consisting of benzoic acid dissolved in acetone. The reduction gave rise to enhancement of the critical temperature (T C) of Bi-2212 up to ∼90 K. This reduction effect on T C corresponded to the effect of annealing at elevated temperatures in reducing atmospheres. It appears that protons from the benzoic acid carboxyl groups were responsible for the reduction of the Bi-2212. Structural stability of the electrochemically reduced Bi-2212 was different from that of Bi-2212 annealed in reducing atmospheres.

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Novel electrochemical route for reduction of superconducting Bi ₂Sr ₂CaCu ₂O _8+δ

Abstract

ASJC Scopus subject areas

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