Polarization switching in epitaxial BiFeO 3 films

Journal Article

Zavaliche, F., P. Shafer, Ramamoorthy Ramesh, M.P. Cruz, R.R. Das, D.M. Kim, C.B. Eom

10.1063/1.2149180

Ferroelectric domain structure and polarization switching in an epitaxial BiFe O3 film grown on a 0.8° miscut SrTi O3 (001) substrate were studied by piezoelectric force microscopy. The film shows a two-domain stripe pattern, with the polarization vectors oriented along two 〈111〉 axes which form an angle of 71°. Polarization switching was investigated by locally poling the film. By combining the perpendicular and in-plane piezoresponse data we found that polarization rotates by 71° and 109°, while 180° switching is mainly observed at low fields. © 2005 American Institute of Physics.

Applied Physics Letters

87

2005

00036951

Ramesh Lab