Anharmonic thermal motion in the 93-K superconductor Ba2YCu3O7 using multiple-wavelength x-ray diffraction

P. Marsh; T. Siegrist; R. M. Fleming; L. F. Schneemeyer; J. V. Waszczak

doi:10.1103/PhysRevB.38.874

Anharmonic thermal motion in the 93-K superconductor Ba2YCu3O7 using multiple-wavelength x-ray diffraction

P. Marsh, T. Siegrist, R. M. Fleming, L. F. Schneemeyer, J. V. Waszczak

Chemistry and Biochemistry

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Abstract

We have obtained anisotropic thermal parameters for Ba2YCu3O7 from a dual-wavelength x-ray crystal structure determination on a single crystal with a small amount of twinning. Anharmonic thermal motion was found for both Ba and Cu atoms with the largest anharmonic feature attributed to a Ba-Ba breathing mode. The anisotropic and anharmonic thermal parameters are consistent with the coordination polyhedra as well as the bonding distances involved.

Original language	English
Pages (from-to)	874-877
Number of pages	4
Journal	Physical Review B
Volume	38
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevB.38.874
State	Published - 1 Jan 1988

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10.1103/PhysRevB.38.874

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abstract = "We have obtained anisotropic thermal parameters for Ba2YCu3O7 from a dual-wavelength x-ray crystal structure determination on a single crystal with a small amount of twinning. Anharmonic thermal motion was found for both Ba and Cu atoms with the largest anharmonic feature attributed to a Ba-Ba breathing mode. The anisotropic and anharmonic thermal parameters are consistent with the coordination polyhedra as well as the bonding distances involved.",

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AU - Schneemeyer, L. F.

AU - Waszczak, J. V.

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AB - We have obtained anisotropic thermal parameters for Ba2YCu3O7 from a dual-wavelength x-ray crystal structure determination on a single crystal with a small amount of twinning. Anharmonic thermal motion was found for both Ba and Cu atoms with the largest anharmonic feature attributed to a Ba-Ba breathing mode. The anisotropic and anharmonic thermal parameters are consistent with the coordination polyhedra as well as the bonding distances involved.

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Anharmonic thermal motion in the 93-K superconductor Ba2YCu3O7 using multiple-wavelength x-ray diffraction

Abstract

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