Size dependence of domain patterns in a constrained ferroelectric system

Rajeev Ahluwalia, Wenwu Cao

Research output: Contribution to journalArticlepeer-review

32 Scopus citations


We have simulated the size dependence of domain patterns in a two-dimensional (square shaped) constrained ferroelectric system by means of a time-dependent Ginzburg-Landau model. The theory incorporates elastic strain in the form of an effective long-range nonlocal interaction of the polarization. A nonferroelectric layer is introduced in the free energy that enforces a decaying polarization at the surface. The results show that the number of domains decreases on decreasing the system size. We also found two critical sizes. The first one signifies a transition from a multi-domain to a single-domain state and the second indicates the disappearance of ferroelectricity.

Original languageEnglish (US)
Pages (from-to)8105-8109
Number of pages5
JournalJournal of Applied Physics
Issue number12
StatePublished - Jun 2001

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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