Computational Model for Domain Structure Evolution in Ferroelectrics
Abstract
The goal of the proposed research is to develop a sound theoretical framework and advanced numerical techniques to simulate the evolution of domain microstructures in ferroelectric materials. Ferroelectric ceramics are presently being used in a broad range of applications including fuel injectors for high efficiency-low emission diesel engines, actuators for active control of helicopter rotor blades and underwater vehicle control surfaces, and ultrasonic rotary inchworm motors with high power and torque densities. Additionally, ferroelectric thin films are used for data storage in non-volatile ferroelectric random access memory (NVFRAM), sensing and actuation in microelectromechanical system (MEMS), and in nonlinear optics. An understanding of microstructural evolution and domain dynamics is necessary for further development of micro/nano-ferroelectric device technology. We intend to develop a combined theoretical and numerical modeling framework in order to investigate the interactions of domain walls with surfaces, charges, dislocations and other types of defects. Such studies will aid in the understanding of device performance and of material failure mechanisms.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 04, 2011
- Accession Number
- ADA575644
Entities
People
- Chad M. Landis
Organizations
- University of Texas at Austin