“…Since droplets used in spray pyrolysis are usually micron-sized or less, densification is more favorable for this process than for solid-state processes which generally have larger particles. Examples of materials which were produced in the form of solid particles by aerosol-phase densification include: Pd and PdO Pluym et al, 1993a), Ag (Pluym et al, 1993b1, Ba,,,Ca,,,,TiO, (Ortega et al, 1991, BaTiO,, and SrTiO, (Lyons et al, 1992a).…”