Low sintering temperature of (Zn0.65Mg0.35)TiO3–xCaTiO3-based dielectric with controlled temperature coefficient |
| |
Authors: | A. Chaouchi S. d’Astorg S. Marinel |
| |
Affiliation: | 1. Laboratoire de Chimie Appliquée et Génie Chimique, Université de Tizi-Ouzou Mouloud Mammeri, Algeria;2. Laboratoire CRISMAT, UMR 6508 CNRS/ENSICAEN, 6 Bd Maréchal Juin, 14050 Caen cedex, France |
| |
Abstract: | (Zn0.65Mg0.35)TiO3–xCaTiO3-based dielectric ceramics sintered at low temperature thanks to ZnO–B2O3 glass phase addition are investigated. The effects of such additions on the dilatometric curves, the microstructure, the phase composition and the dielectric properties have been carefully examined. It is shown that the sintering temperature is significantly lowered to 930 °C by the addition of 2 wt.% of ZnO–B2O3 glass phase. The temperature coefficient of permittivity (τ?) could be controlled by varying the CaTiO3 content and lead to near zero τ? value. As an optimal composition, (Zn0.65Mg0.35)TiO3 + 7%CaTiO3, co-sinterable with silver electrodes at 930 °C, exhibits at 1 MHz, a relative permittivity of ?r = 21, a temperature coefficient of the permittivity τ? of ?4 ppm/°C and low dielectric losses (tan(δ) < 10?3). These interesting properties make this system promising to manufacture Ag-based electrodes multilayer dielectric devices. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|