Dielectric properties of LTNO ceramics and LTNO/PVDF composites

The sol-gel method was used to prepare Li and Ti co-doped NiO (LTNO) ceramics with high dielectric constant due to the boundary-layer capacitor (BLC) structure. The dielectric properties of the LTNO/polyvinylidene fluoride (PVDF) composites were also studied along with the change of frequency with the volume fraction of LTNO fillers. The low dielectric constant of the LNTO/PVDF composites is close to the destruction of the BLC microstructure in LTNO ceramics after their grinding into fine powders. Ti content has been found to affect the dielectric properties of LTNO ceramic and LTNO/PVDF composites. (C) 2004 Elsevier Ltd and Techna Group S.r.l. All rights reserved.