Anisotropic Relaxation and Crystallographic Tilt in the BiFeO3 on Miscut SrTiO3 (001)
Abstract
Epitaxial BiFeO3 thin films on miscut (001) SrTiO3 substrates relax via mechanisms leading to an average rotation of the crystallographic axes of the BiFeO3 layer with respect to the substrate. The angle of the rotation reaches a maximum in the plane defined by the surface normal of the film and the direction of the surface miscut. X-ray microdiffraction images show that each BiFeO3 mosaic block is rotated by a slightly different angle and contains multiple polarization domains. These effects lead to a complicated overall symmetry in BiFeO3 thin films. This relaxation mechanism can be extended to other complex oxides.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 2010
- Accession Number
- ADA602087
Entities
People
- Alexei Grigoriev
- Chad M. Folkman
- Chang-Beom Eom
- Dal-hyun Do
- Ho-won Jang
- Paul G. Evans
- Rebecca J. Sichel
- Seung-hyub Baek
- Zhonghou Cai
Organizations
- University of Wisconsin–Madison