Study of defect-dipoles in an epitaxial ferroelectric thin film

Title
Study of defect-dipoles in an epitaxial ferroelectric thin film
Authors
C. M. FolkmanS. H. BaekC. T. Nelson장호원T. TybellX. Q. PanC. B. Eom
Keywords
Defect-dipoles; ferroelectric film; BiFeO3; 2M24180
Issue Date
2010-02
Publisher
Applied physics letters
Citation
VOL 96, 052903-1-052903-3
Abstract
We have analyzed the defect contributions to the in-plane polarization switching of epitaxial (001) BiFeO3 thin films on (110) TbScO3 substrates. Interdigitated electrodes were patterned with respect to ferroelectric stripe domains in the BiFeO3 film. Polarization measurements exhibited a clear double hysteresis caused by the presence of a static defect field (~40 kV/cm); the field resulted from ordered defect-dipoles initially aligned to the spontaneous polarization. By monitoring the defect field, both realignment and disassociation of the defect-dipoles were demonstrated. These results establish the arrangement of defect-dipoles in epitaxial ferroelectric thin films, guiding technologies and opening an avenue for defect related studies.
URI
http://pubs.kist.re.kr/handle/201004/37133
ISSN
0003-6951
Appears in Collections:
KIST Publication > Article
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