Patent ID: 7923497

Claim:
A composition comprising: a polymeric material; and ceramic antiferroelectric particles having a particle size of from about 10 nanometers to about 500 nanometers; wherein the antiferroelectric particles comprise PbHfO 3 , PbLa(ZrSnTi)O 3 , PbNb(ZrSnTi)O 3 , lead scandium niobium titanate (PSNT), lead lutetium niobium titanate (PLuNT), NaNbO 3 , (K,Na)(Nb,Ta)O 3 , KNbO 3 , BaZrO 3 , Na 0.25 K 0.25 Bi 0.5 TiO 3 , Ag(Ta,Nb)O 3 , K 0.5 Bi 0.5 TiO 3 —BaTiO 3 , or a combination of these and wherein the ceramic antiferroelectric particles are present in an amount of greater than about 10 wt % of the total weight of the composition.