Electrostrictive Ceramics for Sonar Projectors

Pilgrim, S.M.; Revathi, S.

doi:10.1016/b978-0-12-803581-8.01716-1

Cited by 1 publication

(1 citation statement)

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“…The development of novel materials exhibiting exceptional strain response in the presence of an external electric field is imperative to the development of tunable electromechanical devices [1][2][3][4][5][6][7][8] . Promising applications involve next-generation transducers 9 , ultra-efficient actuators 1,2,10 , sonars 11 , and low-power logic devices 12 with application spaces in medicine, astronomy, and consumer electronics. Recent discoveries of 'giant' electrostrictors, for example, Gd-doped ceria 8 , and (Nb, Y) doping in bismuth oxide 13 and lanthanum molybdenum oxide 7 , soft nano-composite based on carbon nanotubes (CNT) 14 and liquid crystalline graphene 6 have opened promising applications for superior electromechanical properties, and also as a replacement of leadbased Pb(Ti 1-x Zr x )O 3 (PZT) solid solutions that are widely used in current applications.…”

Section: Introductionmentioning

confidence: 99%

Data-driven methods for discovery of next-generation electrostrictive materials

Trujillo

Gurung

et al. 2022

npj Comput Mater

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All dielectrics exhibit electrostriction, i.e., display a quadratic strain response to an electric field compared to the linear strain dependence of piezoelectrics. As such, there is significant interest in discovering new electrostrictors with enhanced electrostrictive coefficients, especially as electrostrictors can exhibit effective piezoelectricity when a bias electric field is applied. We present the results of a study combining data mining and first-principles computations that indicate that there exists a group of iodides, bromides, and chlorides that have electrostrictive coefficients exceeding 10 m4 C–2 which are substantially higher than typical oxide electrostrictive ceramics and polymers. The corresponding effective piezoelectric voltage coefficients are three orders of magnitude larger than lead zirconate titanate.

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