Physics – Condensed Matter – Materials Science
Scientific paper
2010-04-06
Physics
Condensed Matter
Materials Science
52 pages, 8 figures, 2 appendices, to be submitted to Phys. Rev. B, higher quality figures are available upon request
Scientific paper
Domain wall dynamics in ferroic materials underpins functionality of data storage and information technology devices. Using localized electric field of a scanning probe microscopy tip, we experimentally demonstrate a surprisingly rich range of polarization reversal behaviors in the vicinity of the initially flat 180\deg ferroelectric domain wall. The nucleation bias is found to increase by an order of magnitude from a 2D nucleus at the wall to 3D nucleus in the bulk. The wall is thus significantly ferroelectrically softer than the bulk. The wall profoundly affects switching on length scales of the order of micrometers. The mechanism of correlated switching is analyzed using analytical theory and phase-field modeling. The long-range effect is ascribed to wall bending under the influence of a tip bias well below the bulk nucleation field and placed many micrometers away from the wall. These studies provide an experimental link between the macroscopic and mesoscopic physics of domain walls and atomistic models of nucleation.
Aravind Vasudeva Rao
Bhattacharyya Sudip
Chen Li-Qing
Choudhury Samrat
Eliseev Eugene A.
No associations
LandOfFree
Local Probing of Mesoscopic Physics of Ferroelectric Domain Walls does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Local Probing of Mesoscopic Physics of Ferroelectric Domain Walls, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Local Probing of Mesoscopic Physics of Ferroelectric Domain Walls will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-56981