Synthesis of oxycarbonate solid solutions (Tl1-xHgx)Sr2Ba2Cu2(CO3) (x=0-1.0) and superconductivity

T. Noda; M. Ogawa; J. Akimitsu; M. Kikuchi; E. Ohshima; Y. Syono

doi:10.1016/0921-4534(94)02392-1

Synthesis of oxycarbonate solid solutions (Tl_1-xHg_x)Sr₂Ba₂Cu₂(CO₃) (x=0-1.0) and superconductivity

T. Noda, M. Ogawa, J. Akimitsu, M. Kikuchi, E. Ohshima, Y. Syono

Research output: Contribution to journal › Article

7 Citations (Scopus)

Abstract

Solid solution superconductors (Tl_1-xHg_x)Sr₂Ba₂Cu₂(CO₃)O_y were synthetized for x=0-1.0. The crystal structures, especially its superstructure and superconducting properties, were examined by X-ray powder diffraction, electron microscopy, resistivity and susceptibility measurements. The three different crystallographic phases have been observed; Phases I and II have an 8 times commensurate and 7.5 times incommensurate crystal structure and their propagation vector is along [010]. Phase III has a 4.7-4.5 times incommensurate structure along the [110] direction. The discontinuous change at about x=0.7-0.8 is due to the oxygen deficiency with increasing Hg content T_c also suddenly dropped from 70 to 60 K at about x=0.7-0.8.

Original language	English
Pages (from-to)	12-16
Number of pages	5
Journal	Physica C: Superconductivity and its applications
Volume	242
Issue number	1-2
DOIs	https://doi.org/10.1016/0921-4534(94)02392-1
Publication status	Published - Feb 1 1995
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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Noda, T., Ogawa, M., Akimitsu, J., Kikuchi, M., Ohshima, E., & Syono, Y. (1995). Synthesis of oxycarbonate solid solutions (Tl_1-xHg_x)Sr₂Ba₂Cu₂(CO₃) (x=0-1.0) and superconductivity. Physica C: Superconductivity and its applications, 242(1-2), 12-16. https://doi.org/10.1016/0921-4534(94)02392-1

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abstract = "Solid solution superconductors (Tl1-xHgx)Sr2Ba2Cu2(CO3)Oy were synthetized for x=0-1.0. The crystal structures, especially its superstructure and superconducting properties, were examined by X-ray powder diffraction, electron microscopy, resistivity and susceptibility measurements. The three different crystallographic phases have been observed; Phases I and II have an 8 times commensurate and 7.5 times incommensurate crystal structure and their propagation vector is along [010]. Phase III has a 4.7-4.5 times incommensurate structure along the [110] direction. The discontinuous change at about x=0.7-0.8 is due to the oxygen deficiency with increasing Hg content Tc also suddenly dropped from 70 to 60 K at about x=0.7-0.8.",

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AU - Akimitsu, J.

AU - Kikuchi, M.

AU - Ohshima, E.

AU - Syono, Y.

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AB - Solid solution superconductors (Tl1-xHgx)Sr2Ba2Cu2(CO3)Oy were synthetized for x=0-1.0. The crystal structures, especially its superstructure and superconducting properties, were examined by X-ray powder diffraction, electron microscopy, resistivity and susceptibility measurements. The three different crystallographic phases have been observed; Phases I and II have an 8 times commensurate and 7.5 times incommensurate crystal structure and their propagation vector is along [010]. Phase III has a 4.7-4.5 times incommensurate structure along the [110] direction. The discontinuous change at about x=0.7-0.8 is due to the oxygen deficiency with increasing Hg content Tc also suddenly dropped from 70 to 60 K at about x=0.7-0.8.

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