Observation of Nanoscale [Formula presented] Stripe Domains in Ferroelectric [Formula presented] Thin Films

S. K. Streiffer, J. A. Eastman, D. D. Fong, Carol Thompson, A. Munkholm, M. V. Ramana Murty, O. Auciello, G. R. Bai, G. B. Stephenson

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Abstract

We report the observation of periodic [Formula presented] stripe domains below the ferroelectric transition in thin films. Epitaxial [Formula presented] films of thickness [Formula presented] to 42 nm on [Formula presented] substrates were studied using x-ray scattering. Upon cooling below [Formula presented], satellites appeared around Bragg peaks indicating the presence of [Formula presented] stripe domains of period [Formula presented] to 24 nm. The dependence of [Formula presented] on [Formula presented] agrees well with theory including epitaxial strain effects, while the suppression of [Formula presented] for thinner films is significantly larger than that expected solely from stripe domains.

Original languageEnglish
JournalPhysical Review Letters
Volume89
Issue number6
DOIs
StatePublished - 2002
Externally publishedYes

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