Increase of Tc in HgBa2CuOy by reducing treatment

Makoto Itoh; Ayako Tokiwa-Yamamoto; Seiji Adachi; H. Yamauchi

doi:10.1016/0921-4534(93)90589-I

Increase of T_c in HgBa₂CuO_y by reducing treatment

Makoto Itoh, Ayako Tokiwa-Yamamoto, Seiji Adachi, H. Yamauchi

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

47 Citations (Scopus)

Abstract

The superconductivity of HgBa₂CuO_y annealed in various reducing as well as oxidizing atmospheres was investigated. The assintered HgBa₂CuO_y specimens prepared by solid state reaction starting with mono-oxides of Hg, Ba and Cu exhibited superconductivity at 90 K. It was found that the superconductivity critical temperature (T_c) increased up to 96 K after a reducing treatment of the as-sintered specimen, whereas annealing of the specimen in high-pressure oxygen gas resulted in a decrease of T_c.

Original language	English
Pages (from-to)	271-273
Number of pages	3
Journal	Physica C: Superconductivity and its applications
Volume	212
Issue number	3-4
DOIs	https://doi.org/10.1016/0921-4534(93)90589-I
Publication status	Published - 1993 Jul 15
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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10.1016/0921-4534(93)90589-I

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abstract = "The superconductivity of HgBa2CuOy annealed in various reducing as well as oxidizing atmospheres was investigated. The assintered HgBa2CuOy specimens prepared by solid state reaction starting with mono-oxides of Hg, Ba and Cu exhibited superconductivity at 90 K. It was found that the superconductivity critical temperature (Tc) increased up to 96 K after a reducing treatment of the as-sintered specimen, whereas annealing of the specimen in high-pressure oxygen gas resulted in a decrease of Tc.",

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AU - Itoh, Makoto

AU - Tokiwa-Yamamoto, Ayako

AU - Adachi, Seiji

AU - Yamauchi, H.

PY - 1993/7/15

Y1 - 1993/7/15

N2 - The superconductivity of HgBa2CuOy annealed in various reducing as well as oxidizing atmospheres was investigated. The assintered HgBa2CuOy specimens prepared by solid state reaction starting with mono-oxides of Hg, Ba and Cu exhibited superconductivity at 90 K. It was found that the superconductivity critical temperature (Tc) increased up to 96 K after a reducing treatment of the as-sintered specimen, whereas annealing of the specimen in high-pressure oxygen gas resulted in a decrease of Tc.

AB - The superconductivity of HgBa2CuOy annealed in various reducing as well as oxidizing atmospheres was investigated. The assintered HgBa2CuOy specimens prepared by solid state reaction starting with mono-oxides of Hg, Ba and Cu exhibited superconductivity at 90 K. It was found that the superconductivity critical temperature (Tc) increased up to 96 K after a reducing treatment of the as-sintered specimen, whereas annealing of the specimen in high-pressure oxygen gas resulted in a decrease of Tc.

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Increase of T_c in HgBa₂CuO_y by reducing treatment

Abstract

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