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 | |
| State | Published - 1 Jan 1988 |
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Fleming, R. M., Schneemeyer, L. F., 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