Souza, José Vitor C. [UNESP]Castro, Pedro J. [UNESP]Nono, Maria C. A.Mineiro, Sergio L.2014-05-272014-05-272010-12-15Materials Science Forum, v. 660-661, p. 641-645.0255-5476http://hdl.handle.net/11449/72226For microwave applications, including mobile and satellite communications, ceramic resonators should have a high dielectric constant, low dielectric losses, and high frequency stability. In this sense, TiO2-ZrO 2 ceramics have been investigated as a function of sintering behavior, phase composition, and microstructure. The ceramics were densified reaching a value of about 86% of theoretical density at 1400°C sintering temperature. The ceramics are prepared by mixing raw materials with the following TiO2-ZrO2 weight % ratio: 100 to 0, 90 to 10, and 80 to 20, respectively. The measured dielectric constants are between 79 and 88 values, while the quality factor due to dielectric losses are between 2820 and 5170. These results point out the influence of Ti/Zr ratio on controlling the dielectric properties. © (2010) Trans Tech Publications.641-645engCeramic microstructureCeramic resonatorsMicrowave dielectric propertiesPhase compositionTiO2-ZrO 2Ceramic microstructuresCrystalline phaseDielectric constantsHigh dielectric constantsHigh-frequency stabilityLow dielectric lossMicrowave applicationsQuality factorsSatellite communicationsSintering behaviorsSintering temperaturesTheoretical densityTiODielectric devicesDielectric lossesMicrostructureOptical resonatorsPermittivitySatellite communication systemsSinteringZirconium alloysCeramic materialsTrabalho apresentado em evento10.4028/www.scientific.net/MSF.660-661.641Acesso aberto2-s2.0-78649925740