Zurbuchen MA, Asayama G, Schlom DG, Streiffer SK. Ferroelectric domain structure of SrBi2Nb2O9 epitaxial thin films.
PHYSICAL REVIEW LETTERS 2002;
88:107601. [PMID:
11909385 DOI:
10.1103/physrevlett.88.107601]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2001] [Indexed: 05/23/2023]
Abstract
The domain structure in a ferroelectric with well-defined crystallography and negligible ferroelastic distortion (<0.002%) is reported. In contrast to prototypical ferroelectrics in which long-range elastic strain dictates the domain structure, in SrBi2Nb2O9 the elastic term is insignificant, allowing dipole-dipole interactions and domain wall energies to dominate in determining the domain structure. Electron microscopy reveals ferroelectric domains that are irregularly shaped and highly curved. Out-of-phase boundary defects are shown to be weakly correlated with 90 degrees ferroelectric domain structure.
Collapse