Changes of the local oxygen content and ordering at twin boundaries of high-Tc YBa2Cu3O7−x superconductors
Y. Yan, W. Y. Liang, T. Walther, W. M. Stobbs
DOI 10.1103/PhysRevB.54.16234 · Physical Review B
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Abstract
We demonstrate here the way the local oxygen content and configuration in YBa2Cu3O7−x can be related to specific Fourier components of the image intensity in experimental high resolution electron microscopy images along the [001] zone axis. We further show that this allows us to evaluate experimentally local changes in the oxygen content and ordering at unit cell resolution in projection across twin boundaries in a high-Tc YBa2Cu3O7−x superconductor which exhibited Tc=92 K. Our studies indicate that, on traversing a twin boundary, there is not only an ordering change but also a reduction in the oxygen content. © 1996 The American Physical Society.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7-x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 92 | Pressure not reported | unknown |
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