A Novel Approach to Large Electrostriction in Ferroelectrics
Abstract
Ferroelectric materials are currently used in a variety of sensor and actuator applications. Conventional materials offer a high frequency, linear response with useful strains of up to 0.1 %. Additional applications ca be imagined for actuators that generate a great degree of strain. The current investigation is aimed at offering increased actuator performance over conventional materials. In addition, the study offers insight into the underlying principles of behavior of those materials currently in use. Experimental studies of large strain actuation has been carried out using a single crystal in novel configuration using Barium Titanate and Lead Titanate. Strains of about 0.9 % have been demonstrated in Barium Titanate and about 2 % in Lead Titanate. Theoretical studies have explored the possibility of extending this idea to polycrystals and to the ferroelectric/antiferroelectric phase transformation.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 31, 2003
- Accession Number
- ADA418181
Entities
People
- G. Ravichandran
- K. Bhattacharya
Organizations
- California Institute of Technology