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

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

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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 languageEnglish
Pages (from-to)7920-7923
Number of pages4
JournalPhysical Review B
Volume37
Issue number13
DOIs
StatePublished - 1 Jan 1988

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scattering
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oxygen compounds
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Fleming, R. M., Schneemeyer, L., Gallagher, P. K., Batlogg, B., Rupp, L. W., & Waszczak, J. V. (1988). X-ray-scattering study of finite-range order in Ba2YCu3O6.7. Physical Review B, 37(13), 7920-7923. https://doi.org/10.1103/PhysRevB.37.7920
Fleming, R. M. ; Schneemeyer, Lynn ; Gallagher, P. K. ; Batlogg, B. ; Rupp, L. W. ; Waszczak, J. V. / X-ray-scattering study of finite-range order in Ba2YCu3O6.7. In: Physical Review B. 1988 ; Vol. 37, No. 13. pp. 7920-7923.
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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.",
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Fleming, RM, Schneemeyer, L, Gallagher, PK, Batlogg, B, Rupp, LW & Waszczak, JV 1988, 'X-ray-scattering study of finite-range order in Ba2YCu3O6.7', Physical Review B, vol. 37, no. 13, pp. 7920-7923. https://doi.org/10.1103/PhysRevB.37.7920

X-ray-scattering study of finite-range order in Ba2YCu3O6.7. / Fleming, R. M.; Schneemeyer, Lynn; Gallagher, P. K.; Batlogg, B.; Rupp, L. W.; Waszczak, J. V.

In: Physical Review B, Vol. 37, No. 13, 01.01.1988, p. 7920-7923.

Research output: Contribution to journalArticleResearchpeer-review

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AU - Fleming, R. M.

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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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Fleming RM, Schneemeyer L, Gallagher PK, Batlogg B, Rupp LW, Waszczak JV. X-ray-scattering study of finite-range order in Ba2YCu3O6.7. Physical Review B. 1988 Jan 1;37(13):7920-7923. https://doi.org/10.1103/PhysRevB.37.7920