STUDY ON THE PYROELECTRIC PROPERTIES OF PLT P(VDF-TRFE) NANOCOMPOSITES/

Lead lanthanum titanate (PLT) nanocrystalline powder prepared by the s ol-gel process was incorporated into a polyvinylidene fluoride/trifluo roethylene (P(VDF-TrEF)) copolymer matrix to form PLT/P(VDF-TrFE) nano composites. The permittivities (epsilon) of the nanocomposites as a fu nction of volume fraction of ceramic phi were modeled using the Brugge man model. The pyroelectric coefficients (P) and figure of merit (p/ep silon) were measured as functions of the poling field E. The nanocompo site has P and P/epsilon values higher than those of the copolymer, an d has good potential in pyroelectric applications.