Note: Electrical and thermal characterization of a ferroelectric thin film with an electro-thermal nanoprobe
Abstract
The localized temperature-dependent piezoelectric response of ferroelectric barium strontium titanate (BST) thin films is studied using an electro-thermal (ET) nanoprobe. The ET probe provides independent electrical and thermal excitation to a nanometer-scale volume of the specimen and is capable of detecting the phase transition temperature of the BST thin films. The piezoresponse measured by the ET probe follows the temperature dependence of the piezoelectric constant, whereas with bulk heating the response follows the temperature dependence of the spontaneous polarization. The observed differences stem from the localized inhomogeneous electro-thermal field distribution at the specimen.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jul 01, 2012
- Source ID
- 10.1063/1.4733730
Entities
People
- A. R. Damodaran
- H. Teng
- J. N. Emmerich
- K. Jambunathan
- L. W. Martin
- P. C. Fletcher
- R. A. JACKSON
- William P King
- Yipeng Wu
Organizations
- Army Research Office
- National Science Foundation
- Office of Naval Research
- University of Illinois Urbana–Champaign
- University of Wisconsin–Platteville