Abstract
The lengths and spacings of twins in YBa2Cu3O 7-δ thin films deposited onto MgO substrates have been measured by transmission electron microscopy as a function of film thickness t, for t ranging from 50 to 1400 nm. The twin length is linear in t, while the twin spacing follows a t1/2 dependence. This form for the twin spacing is consistent with the prediction of a simple free energy expression for the twinning transformation.
Original language | English |
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Pages (from-to) | 2171-2173 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 58 |
Issue number | 19 |
DOIs | |
State | Published - 1991 |
Externally published | Yes |