Cu-O vibrations of Ba2YCu3Ox

Michael Stavola; D. M. Krol; W. Weber; S. A. Sunshine; A. Jayaraman; G. A. Kourouklis; R. J. Cava; E. A. Rietman

doi:10.1103/PhysRevB.36.850

Cu-O vibrations of Ba2YCu3Ox

Michael Stavola, D. M. Krol, W. Weber, S. A. Sunshine, A. Jayaraman, G. A. Kourouklis, R. J. Cava, E. A. Rietman

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175 Scopus citations

Abstract

We present Raman and infrared absorption data for Ba2YCu3Ox with 7>x>6 for several samples with well-characterized oxygen content. Over this range the material has an oxygen-deficient tripled perovskite structure whose superconductivity properties depend critically on x. An orthorhombic-to-tetragonal transition occurs for x 6.5. We have examined both phases for the frequency range >400 cm-1 which contains the Cu-O bond-stretching vibrations. A force-constant model has been developed which allows us to assign the features in the spectra. Our results are consistent with the linear Cu-O-Cu-O chains in Ba2YCu3O7 being absent in the nonsuperconducting Ba2YCu3O6.

Original language	English (US)
Pages (from-to)	850-853
Number of pages	4
Journal	Physical Review B
Volume	36
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevB.36.850
State	Published - 1987
Externally published	Yes

All Science Journal Classification (ASJC) codes

Condensed Matter Physics

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10.1103/PhysRevB.36.850

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title = "Cu-O vibrations of Ba2YCu3Ox",

abstract = "We present Raman and infrared absorption data for Ba2YCu3Ox with 7>x>6 for several samples with well-characterized oxygen content. Over this range the material has an oxygen-deficient tripled perovskite structure whose superconductivity properties depend critically on x. An orthorhombic-to-tetragonal transition occurs for x 6.5. We have examined both phases for the frequency range >400 cm-1 which contains the Cu-O bond-stretching vibrations. A force-constant model has been developed which allows us to assign the features in the spectra. Our results are consistent with the linear Cu-O-Cu-O chains in Ba2YCu3O7 being absent in the nonsuperconducting Ba2YCu3O6.",

author = "Michael Stavola and Krol, {D. M.} and W. Weber and Sunshine, {S. A.} and A. Jayaraman and Kourouklis, {G. A.} and Cava, {R. J.} and Rietman, {E. A.}",

year = "1987",

doi = "10.1103/PhysRevB.36.850",

language = "English (US)",

volume = "36",

pages = "850--853",

journal = "Physical Review B",

issn = "0163-1829",

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TY - JOUR

T1 - Cu-O vibrations of Ba2YCu3Ox

AU - Stavola, Michael

AU - Krol, D. M.

AU - Weber, W.

AU - Sunshine, S. A.

AU - Jayaraman, A.

AU - Kourouklis, G. A.

AU - Cava, R. J.

AU - Rietman, E. A.

PY - 1987

Y1 - 1987

N2 - We present Raman and infrared absorption data for Ba2YCu3Ox with 7>x>6 for several samples with well-characterized oxygen content. Over this range the material has an oxygen-deficient tripled perovskite structure whose superconductivity properties depend critically on x. An orthorhombic-to-tetragonal transition occurs for x 6.5. We have examined both phases for the frequency range >400 cm-1 which contains the Cu-O bond-stretching vibrations. A force-constant model has been developed which allows us to assign the features in the spectra. Our results are consistent with the linear Cu-O-Cu-O chains in Ba2YCu3O7 being absent in the nonsuperconducting Ba2YCu3O6.

AB - We present Raman and infrared absorption data for Ba2YCu3Ox with 7>x>6 for several samples with well-characterized oxygen content. Over this range the material has an oxygen-deficient tripled perovskite structure whose superconductivity properties depend critically on x. An orthorhombic-to-tetragonal transition occurs for x 6.5. We have examined both phases for the frequency range >400 cm-1 which contains the Cu-O bond-stretching vibrations. A force-constant model has been developed which allows us to assign the features in the spectra. Our results are consistent with the linear Cu-O-Cu-O chains in Ba2YCu3O7 being absent in the nonsuperconducting Ba2YCu3O6.

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DO - 10.1103/PhysRevB.36.850

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EP - 853

JO - Physical Review B

JF - Physical Review B

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ER -

Cu-O vibrations of Ba2YCu3Ox

Abstract

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