Crystallography of phase transition of YBa2Cu3O7-δ

Dravid, Vinayak P.; Lyman, C. E.; Notis, M. R.
March 1988
Applied Physics Letters;3/14/1988, Vol. 52 Issue 11, p933
Academic Journal
A space-group theoretical approach has been applied to the high Tc superconducting oxide YBa2Cu3O7-δ (δ∼0.3) to explain the occurrence of coherent domain boundaries. This method quantitatively accounts for the transmission electron microscopy (TEM) observations of {110} twin boundaries in the room-temperature orthorhombic phase. The possible nature of the relaxation of these twin boundaries and the atomic arrangement at these boundaries are briefly discussed.


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