Materials Research Bulletin, Vol.37, No.3, 459-465, 2002
Rapid formation of lead magnesium niobate-based ferroelectric ceramics via a high-energy ball milling process
Pyrochlore-free nano-sized 0.90Pb(Mg1/3Nb2/3)O-3(PMN)-0.10PbTiO(3)(PT) and 0.65PMN-0.35PT powders were synthesized from oxides via a high-energy ball milling process. Single perovskite phase PMN-PT were readily formed from the oxide mixture after milling for only 2 h. The grain size calculated from X-ray diffraction (XRD) patterns of all samples is about 20 nm, which is in agreement with the observation from scanning electron microscopy (SEM) (20-50 nm). PMN-PT ceramics were obtained by sintering the milled powders at temperature from 1000 to 1100degreesC for 2 h. The dielectric, ferroelectric properties of the PMN-PT ceramics derived from the synthesized powders were comparable with the reported results in the literature.
Keywords:ceramics;ferroelectricity