Thickness dependence of the twin density in YBa2Cu 3O7-δ thin films sputtered onto MgO substrates

S. K. Streiffer, E. M. Zielinski, B. M. Lairson, J. C. Bravman

Research output: Contribution to journalArticlepeer-review

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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 languageEnglish
Pages (from-to)2171-2173
Number of pages3
JournalApplied Physics Letters
Volume58
Issue number19
DOIs
StatePublished - 1991
Externally publishedYes

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