(1 - x)Ca2/5Sm2/5TiO3-xLi(1/2)Nd(1/2)TiO(3) (CSLNT) ceramic powder was prepared by a liquid mixing method using ethylenediaminetetraacetic acid (EDTA) as the chelating agent. TG, DTA, XRD and TEM characterized the precursors and derived oxide powders. When x = 0.3, perovskite CSLNT was synthesized at 1000 degreesC for 3 h in air. The CSLNT (x = 0.3) ceramics sintered at 1200 degreesC for 3 h show excellent microwave dielectric properties of epsilon(r) = 99, Q(f) = 6200 GHz and tau(f) = 9 x 10(-6) degreesC(-1). (C) 2004 Elsevier Ltd. All rights reserved.