Large strain electrostrictive actuation in barium titanate

Burcsu, E.; Ravichandran, G.; Bhattacharya, K.
September 2000
Applied Physics Letters;9/11/2000, Vol. 77 Issue 11
Academic Journal
Large strain electrostriction in single-crystal ferroelectric materials is investigated. The mode of electrostriction is based on a combined electromechanical loading used to induce cyclic, 90° domain switching. Experiments have been performed on crystals of barium titanate with constant compressive stress and oscillating electric-field input. Induced strains of more than 0.8% have been measured. Strains as large as 5% are predicted for other materials of the same class. The results demonstrate a possible avenue for obtaining large actuation strains in electromechanical devices. © 2000 American Institute of Physics.


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