Publication Type:Journal Article
Source:Applied Physics Letters, American Institute of Physics Inc., Volume 90, Number 20 (2007)
Keywords:bismuth compounds, Electric field effects, Epitaxial electrodes, Ferroelectric switching, film growth, Magnetic domains, Magnetoelectric domain imaging, Microscopic examination, Piezoelectric force microscopy, Polarization, Single crystals, thin films
Piezoelectric force microscopy has been enhanced by coplanar epitaxial electrodes to detect and manipulate the striped ferroelectric domain structure of a multiferroic BiFe O3 thin film grown on single-crystalline DySc O3. Time-resolved imaging revealed ferroelastic (71° and 109°) switching of domains in a needlelike region that grew from one electrode toward the other in a uniform electric field, and demonstrated reversible rotation of the 71° domain stripe orientation in a nonuniform field. Purely ferroelectric (180°) switching was suppressed by the geometry of the electrodes. The extendibility of this apparatus opens the door toward magnetoelectric domain imaging. © 2007 American Institute of Physics.
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