Microwave dielectric properties of ceo2 added (pb0.63cao.37)zro3 ceramic system

Abstract

The effects of CeO2 on microwave dielectric properties of (Pb0 63Ca0. 37)ZrO3 ceramics were investigated in the range of 0.05 to 3 wt'. As the CeO2 increases, the lattice constant decreases and increases again due to the substitution of Ce ions to the A site at first time, then to the B site, and the excess additive forms a second phase. Thus the Q value increases by compensation effect, and then decreases by the second phase above 0.3 wt' CeO2 contents. With increasing the Ce02 contents, the dielectric constant decreases slightly, the temperature coefficient of the resonance frequency changes positively, and then negatively. ？ 1993, Taylor & Francis Group, LLC. All rights reserved.