X-ray-scattering study of finite-range order in Ba2YCu3O6.7

R. M. Fleming; L. F. Schneemeyer; P. K. Gallagher; B. Batlogg; L. W. Rupp; J. V. Waszczak

doi:10.1103/PhysRevB.37.7920

X-ray-scattering study of finite-range order in Ba2YCu3O6.7

R. M. Fleming, L. F. Schneemeyer, P. K. Gallagher, B. Batlogg, L. W. Rupp, J. V. Waszczak

Chemistry and Biochemistry

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Abstract

We have observed evidence of finite-range order in quenched crystals of nominal composition Ba2YCu3O6.7. X-ray scattering shows diffuse peaks with a reduced wave vector of (1/2,0,0) in the oxygen-deficient compound but not in fully oxidized Ba2YCu3O7. Although the crystals are twinned, we find that the diffuse satellites occur symmetrically around (h,0,0) peaks rather than (0,k,0) peaks indicating a doubling of the unit cell along the a axis (transverse to the Cu-O chains). The width of the diffuse peaks yields coherence lengths of 21, 16, and 9 AI for the a0, b0, and c0 directions, respectively.

Original language	English
Pages (from-to)	7920-7923
Number of pages	4
Journal	Physical Review B
Volume	37
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevB.37.7920
State	Published - 1 Jan 1988

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title = "X-ray-scattering study of finite-range order in Ba2YCu3O6.7",

abstract = "We have observed evidence of finite-range order in quenched crystals of nominal composition Ba2YCu3O6.7. X-ray scattering shows diffuse peaks with a reduced wave vector of (1/2,0,0) in the oxygen-deficient compound but not in fully oxidized Ba2YCu3O7. Although the crystals are twinned, we find that the diffuse satellites occur symmetrically around (h,0,0) peaks rather than (0,k,0) peaks indicating a doubling of the unit cell along the a axis (transverse to the Cu-O chains). The width of the diffuse peaks yields coherence lengths of 21, 16, and 9 AI for the a0, b0, and c0 directions, respectively.",

author = "Fleming, {R. M.} and Schneemeyer, {L. F.} and Gallagher, {P. K.} and B. Batlogg and Rupp, {L. W.} and Waszczak, {J. V.}",

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T1 - X-ray-scattering study of finite-range order in Ba2YCu3O6.7

AU - Fleming, R. M.

AU - Schneemeyer, L. F.

AU - Gallagher, P. K.

AU - Batlogg, B.

AU - Rupp, L. W.

AU - Waszczak, J. V.

PY - 1988/1/1

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N2 - We have observed evidence of finite-range order in quenched crystals of nominal composition Ba2YCu3O6.7. X-ray scattering shows diffuse peaks with a reduced wave vector of (1/2,0,0) in the oxygen-deficient compound but not in fully oxidized Ba2YCu3O7. Although the crystals are twinned, we find that the diffuse satellites occur symmetrically around (h,0,0) peaks rather than (0,k,0) peaks indicating a doubling of the unit cell along the a axis (transverse to the Cu-O chains). The width of the diffuse peaks yields coherence lengths of 21, 16, and 9 AI for the a0, b0, and c0 directions, respectively.

AB - We have observed evidence of finite-range order in quenched crystals of nominal composition Ba2YCu3O6.7. X-ray scattering shows diffuse peaks with a reduced wave vector of (1/2,0,0) in the oxygen-deficient compound but not in fully oxidized Ba2YCu3O7. Although the crystals are twinned, we find that the diffuse satellites occur symmetrically around (h,0,0) peaks rather than (0,k,0) peaks indicating a doubling of the unit cell along the a axis (transverse to the Cu-O chains). The width of the diffuse peaks yields coherence lengths of 21, 16, and 9 AI for the a0, b0, and c0 directions, respectively.

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X-ray-scattering study of finite-range order in Ba2YCu3O6.7

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