Crystal structure and phase transition of PbBaSrYCu3Oy(y=7∼8.4

A. Tokiwa; T. Oku; M. Nagoshi; M. Kikuchi; K. Hiraga; Y. Syono

doi:10.1016/0921-4534(89)90083-X

Crystal structure and phase transition of PbBaSrYCu₃O_y(y=7∼8.4

A. Tokiwa, T. Oku, M. Nagoshi, M. Kikuchi, K. Hiraga, Y. Syono

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

58 Citations (Scopus)

Abstract

PbBaSrYCu₃O_y prepared by slow cooling, oxygen annealing and quenching methods was studied by XPD, EPMA, HREM and TGA. From a high resolution electron microscopic investigation, the structure of PbBaSrYCu₃O₇ quenched from above 800°C was found to be a derivative of Pb₂Sr₂YCu₃O₈, in which one of the PbO layers in the PbO-Cu-PbO block was missing. The slowly cooled specimen with y{reversed tilde equals}8.2 lost 1.2 oxygen atoms above 580°C with an abrupt and reversible transition to PbBaSrYCu₃O₇. All of the slowly cooled, oxygen annealed and quenched specimens showed no superconductivity and behaved like a semiconductor.

Original language	English
Pages (from-to)	459-467
Number of pages	9
Journal	Physica C: Superconductivity and its applications
Volume	161
Issue number	4
DOIs	https://doi.org/10.1016/0921-4534(89)90083-X
Publication status	Published - 1989 Dec 1
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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abstract = "PbBaSrYCu3Oy prepared by slow cooling, oxygen annealing and quenching methods was studied by XPD, EPMA, HREM and TGA. From a high resolution electron microscopic investigation, the structure of PbBaSrYCu3O7 quenched from above 800°C was found to be a derivative of Pb2Sr2YCu3O8, in which one of the PbO layers in the PbO-Cu-PbO block was missing. The slowly cooled specimen with y{reversed tilde equals}8.2 lost 1.2 oxygen atoms above 580°C with an abrupt and reversible transition to PbBaSrYCu3O7. All of the slowly cooled, oxygen annealed and quenched specimens showed no superconductivity and behaved like a semiconductor.",

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T1 - Crystal structure and phase transition of PbBaSrYCu3Oy(y=7∼8.4

AU - Tokiwa, A.

AU - Oku, T.

AU - Nagoshi, M.

AU - Kikuchi, M.

AU - Hiraga, K.

AU - Syono, Y.

PY - 1989/12/1

Y1 - 1989/12/1

N2 - PbBaSrYCu3Oy prepared by slow cooling, oxygen annealing and quenching methods was studied by XPD, EPMA, HREM and TGA. From a high resolution electron microscopic investigation, the structure of PbBaSrYCu3O7 quenched from above 800°C was found to be a derivative of Pb2Sr2YCu3O8, in which one of the PbO layers in the PbO-Cu-PbO block was missing. The slowly cooled specimen with y{reversed tilde equals}8.2 lost 1.2 oxygen atoms above 580°C with an abrupt and reversible transition to PbBaSrYCu3O7. All of the slowly cooled, oxygen annealed and quenched specimens showed no superconductivity and behaved like a semiconductor.

AB - PbBaSrYCu3Oy prepared by slow cooling, oxygen annealing and quenching methods was studied by XPD, EPMA, HREM and TGA. From a high resolution electron microscopic investigation, the structure of PbBaSrYCu3O7 quenched from above 800°C was found to be a derivative of Pb2Sr2YCu3O8, in which one of the PbO layers in the PbO-Cu-PbO block was missing. The slowly cooled specimen with y{reversed tilde equals}8.2 lost 1.2 oxygen atoms above 580°C with an abrupt and reversible transition to PbBaSrYCu3O7. All of the slowly cooled, oxygen annealed and quenched specimens showed no superconductivity and behaved like a semiconductor.

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Crystal structure and phase transition of PbBaSrYCu₃O_y(y=7∼8.4

Abstract

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