Crystallographic description of phases in the Y-Ba-Cu-O superconductor

R. M. Hazen; L. W. Finger; R. J. Angel; C. T. Prewitt; N. L. Ross; H. K. Mao; C. G. Hadidiacos; P. H. Hor; R. L. Meng; C. W. Chu

doi:10.1103/PhysRevB.35.7238

Crystallographic description of phases in the Y-Ba-Cu-O superconductor

R. M. Hazen, L. W. Finger, R. J. Angel, C. T. Prewitt, N. L. Ross, H. K. Mao, C. G. Hadidiacos, P. H. Hor, R. L. Meng, C. W. Chu

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摘要

Single-crystal x-ray techniques were used to determine two structures that comprise the Y-Ba-Cu-O superconductor. A green phase has the orthorhombic Y2BaCuO5 structure. An opaque phase (YBa2Cu3O6+x, 0x1.0) is tetragonal (a=3.859 A, c=11.71 A; space group P4m2;Z=1). The structure is related to a 1:1:3 ABO3 perovskite: Ba and Y order in A sites and Cu is in B sites. Systematic oxygen vacancies between adjacent copper atoms lead to a fivefold-coordinate Cu in proximity to Y and a twofold-coordinate Cu in the vicinity of the Ba site.

原文	English
頁（從 - 到）	7238-7241
頁數	4
期刊	Physical Review B
卷	35
發行號	13
DOIs	https://doi.org/10.1103/PhysRevB.35.7238
出版狀態	Published - 1987

All Science Journal Classification (ASJC) codes

凝聚態物理學

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10.1103/PhysRevB.35.7238

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abstract = "Single-crystal x-ray techniques were used to determine two structures that comprise the Y-Ba-Cu-O superconductor. A green phase has the orthorhombic Y2BaCuO5 structure. An opaque phase (YBa2Cu3O6+x, 0x1.0) is tetragonal (a=3.859 A, c=11.71 A; space group P4m2;Z=1). The structure is related to a 1:1:3 ABO3 perovskite: Ba and Y order in A sites and Cu is in B sites. Systematic oxygen vacancies between adjacent copper atoms lead to a fivefold-coordinate Cu in proximity to Y and a twofold-coordinate Cu in the vicinity of the Ba site.",

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AU - Hazen, R. M.

AU - Finger, L. W.

AU - Angel, R. J.

AU - Prewitt, C. T.

AU - Ross, N. L.

AU - Mao, H. K.

AU - Hadidiacos, C. G.

AU - Hor, P. H.

AU - Meng, R. L.

AU - Chu, C. W.

PY - 1987

Y1 - 1987

N2 - Single-crystal x-ray techniques were used to determine two structures that comprise the Y-Ba-Cu-O superconductor. A green phase has the orthorhombic Y2BaCuO5 structure. An opaque phase (YBa2Cu3O6+x, 0x1.0) is tetragonal (a=3.859 A, c=11.71 A; space group P4m2;Z=1). The structure is related to a 1:1:3 ABO3 perovskite: Ba and Y order in A sites and Cu is in B sites. Systematic oxygen vacancies between adjacent copper atoms lead to a fivefold-coordinate Cu in proximity to Y and a twofold-coordinate Cu in the vicinity of the Ba site.

AB - Single-crystal x-ray techniques were used to determine two structures that comprise the Y-Ba-Cu-O superconductor. A green phase has the orthorhombic Y2BaCuO5 structure. An opaque phase (YBa2Cu3O6+x, 0x1.0) is tetragonal (a=3.859 A, c=11.71 A; space group P4m2;Z=1). The structure is related to a 1:1:3 ABO3 perovskite: Ba and Y order in A sites and Cu is in B sites. Systematic oxygen vacancies between adjacent copper atoms lead to a fivefold-coordinate Cu in proximity to Y and a twofold-coordinate Cu in the vicinity of the Ba site.

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Crystallographic description of phases in the Y-Ba-Cu-O superconductor

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