Nanotechnology Conference and Trade Show - Nanotech 2006
> Program > Technical Conferences > Business & Development > Nano Impact Workshop > Nanotech Job Fair > Expo
Program
Sessions
Sunday
Monday
Tuesday
Wednesday
Thursday
Index of Authors
Index of Keywords
Confirmed Speakers
Conferences & Symposia

Conference Proceedings

Conference Technical Proceedings

Ferroelectric Domains in Barium Titanate Nanostructures

A. Schilling, T.B. Adams, R.M. Bowman, J.M. Gregg, F.D. Morisson and J.F. Scott
Queen’s University and Nanotec Northern Ireland, UK

Keywords:
nanocapacitors, barium titanate, domains

Abstract:
Developing an understanding of the behaviour of ferroelectrics, which have been size-constrained into the nanoscale regime, has become a topic of intense research. However, experimentally, the fundamental influence of reduced dimensionality is frequently difficult to disentangle from various extrinsic influences that can alter both the state and dynamic properties of ferroelectrics. Ideally, the behaviour of free-standing nanoscale single crystal ferroelectric materials, that have already been heavily characterized in bulk, should act as a model system.
In this paper we will present progress in the understanding of the effects of reduced size on domain structures in free-standing single crystal BaTiO3, where size constraint has been introduced through the use of FIB milling; 1D and 3D nanostructures have been prepared and their properties investigated. STEM was used for imaging domain configurations within these size-constrained ferroelectrics. Decreasing the thickness increased the domain wall density, and interesting domain bifurcations on reduction of lamellar thickness were frequently seen. In toroids, domain behaviour was such that ‘herringbone’ domain patterns were frequently observed - presumably an energy minimizing configuration. Horizontal ladder-like domains are also present indicating a possible relaxed state and reproducing the orientation of the lamella domain walls. Combining FIB and STEM techniques proves to be a way forward in mapping and understanding domain configurations in novel 3D geometries.

Back to Program

Sessions Sunday Monday Tuesday Wednesday Thursday Authors

Nanotech 2006 Conference Program Abstract

 
Nanotechnology Conference | Terms of use | Privacy policy | Contact | NSTI Home
Program | Technical Conferences | Business & Development | Nano Impact Workshop | Nanotech Job Fair | Expo |
Nanotech 2006 Home | Press Room | Venue | Subscribe | Site Map
Names, and logos of other organizations are the property of those organizations and not of NSTI.
This event is not open to the general public and NSTI reserves the right to refuse admission and participation to any individual.