TECHNOLOGY FOCUS - CERAMICS AND GLASS - Preferred Process: The process further comprises: calcining the ceramic powder precursor to form (I); and sintering (I) subsequent to the calcining step. The calcining step is carried out at 200-1500 degrees C for 1 minute to 24 hours. The sintering step is carried out at 1000-3000 degrees C for 1 minute to 24 hours. The process comprises calcining the separated ceramic powder precursor to form (I); forming (I) into a green body; and sintering the green body.    TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The precipitant solution is substantially free of ammonium ion. The onium dicarboxylate comprises a quaternary onium compound of formula ((R4-A(R1)(R3)-R2)+), a tertiary sulfonium compound of formula (((R1)-S(R2)-R3)+), a tertiary sulfoxonium compound of formula ((R1-S(R2)(=O)-R3)+), or an imidazolium compound of formula (a1). The onium dicarboxylate comprises oxalate, malonate, succinate, glutarate, adipate, carbonate, maleate, fumarate, phthalate, isophthalate and/or terephthalate. The onium dicarboxylate comprises tetramethyl ammonium oxalate, and a second onium oxalate where the second onium has a structure of formula ((R4a-A(R1a)(R3a)-R2a)+). The precursor materials comprise ions of one or a combination of two or more of magnesium, calcium, strontium, barium, aluminum, silicon, scandium, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, gallium, germanium, yttrium, zirconium, niobium, molybdenum, technetium, ruthenium, rhodium, thorium, palladium, silver, cadmium, indium, tin, antimony, lanthanum, hafnium, tantalum, tungsten, rhenium, osmium, iridium, platinum, thallium, lead, bismuth, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, dysprosium, erbium, holmium, thulium, terbium, protactinium, uranium, neptunium or plutonium.Either A = N or P; andR1-R4 = 6-18C aryl or 6-18C hydroxyaryl (optionally substituted with one or more substituents of 1-20C alkyl, 1-20C hydroxyalkyl or 1-20C alkoxyalkyl), 1-20C alkyl, 1-20C hydroxyalkyl or 1-20C alkoxyalkyl; orR1+R2, R3+A = heterocyclic group;R4 = 6-18C aryl or 6-18C hydroxyaryl (optionally substituted with one or more substituents of 1-20C alkyl, 1-20C hydroxyalkyl or 1-20C alkoxyalkyl), 1-20C alkyl, 1-20C hydroxyalkyl or 1-20C alkoxyalkyl; andR1a-R4a = 4-20C alkyl.Provided that if the heterocyclic group contains a C=A group or C=S group, then R3 is the second bond. EXAMPLE - Aqueous solution was prepared containing 0.06M barium nitrate, 0.04M strontium nitrate, and 0.1M dihydroxybis(ammonium lactato) titanium (IV) to give a solution A. Aqueous solution of 0.25M tetramethylammonium oxalate was prepared. The pH of the solution was adjusted to 9.2 using an aqueous solution of 10% tetramethylammonium hydroxide to give a solution B1. The solution B1 (1000 g) was weighed into a beaker (4 l). The beaker was placed on a hot plate fitted with a temperature probe for temperature control, and both a temperature probe and a pH probe were placed in the solution. Teflon (RTM: Tetrafluoroethylene polymer) coated mechanical stirring blade was placed in the center of the solution, approximately 1 cm above the bottom of the beaker. The solution A (1000 g) was weighed into a Teflon (RTM: Tetrafluoroethylene polymer) separatory funnel. The funnel was placed in a ring stand with the tip of the funnel positioned above the surface of the solution B1 in the beaker. The solution was heated to 80 degrees C, with the mechanical stirrer. The solution A was added from the separatory funnel at a rate of 1 drop per second. The pH of the solution was periodically adjusted to maintain pH 9 throughout the addition of the solution A, by addition of an aqueous solution of 10% tetramethylammonium hydroxide. The addition of the solution A to the solution B1 was completed after 1 hour and 20 minutes. The mixture was allowed to digest an additional one-half hour at 80 degrees C with stirring. The beaker was covered with Parafilm (RTM: Thin, stretchable plastic film). After two days, the white precipitate was resuspended, and the slurry was stored in a one gallon polyethylene jug. Portions of the slurry were weighed into centrifuge tubes and centrifuged for 1 hour. The resulting supernatant was then filtered. The solid cakes from the centrifuge tubes were dried overnight in a forced-draft oven at 120 degrees C. Portion of the dry barium-strontium titanyl oxalate (BSTO) precursor was saved for further characterization. The remaining BSTO powder was placed in an electric furnace and heated at 800 degrees C for 4 hours to give a barium-strontium titanate (Ba(0.6)Sr(0.4)TiO3) powder.