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 › peer-review

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

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.",

author = "T. Noda and M. Ogawa and J. Akimitsu and M. Kikuchi and E. Ohshima and Y. Syono",

note = "Funding Information: The authors are grateful to E. Aoyagi and Y. Hay-asaka for technical support in electron microscopy. This work was partly supported by a Grant-in-Aid for Scientific Research on Priority Area, {"}Science of High-To Superconductivity{"} the Ministry of Education, Science and Culture, Japan.",

year = "1995",

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doi = "10.1016/0921-4534(94)02392-1",

language = "English",

volume = "242",

pages = "12--16",

journal = "Physica C: Superconductivity and its Applications",

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T1 - Synthesis of oxycarbonate solid solutions (Tl1-xHgx)Sr2Ba2Cu2(CO3) (x=0-1.0) and superconductivity

AU - Noda, T.

AU - Ogawa, M.

AU - Akimitsu, J.

AU - Kikuchi, M.

AU - Ohshima, E.

AU - Syono, Y.

N1 - Funding Information: The authors are grateful to E. Aoyagi and Y. Hay-asaka for technical support in electron microscopy. This work was partly supported by a Grant-in-Aid for Scientific Research on Priority Area, "Science of High-To Superconductivity" the Ministry of Education, Science and Culture, Japan.

PY - 1995/2/1

Y1 - 1995/2/1

N2 - 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.

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

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