抄録
Well-dispersed BaTiO3(BT) particles with their average size less than 0.2μm and tetragonality as high as 1.01 were obtained from a solid-state process by preliminary dry mechanical processing. We attribute these favorable effects to the complex consequences of milling a powder mixture to enhance nucleation of BT and its growth with shorter diffusion path to suppress excessive grain growth. We confirmed these items from various experiments, i.e.: (i) down sizing of individual particulates without causing agglomeration from microscopy; (ii) increase in the homogeneity in a few micrometer regime as confirmed by electron probe microanalysis; and (iii) mechanochemical bridging bond formation across the solid-solid boundary of dissimilar particles detected by x-ray photoelectron spectra.
