Copper electrodes multilayer ceramic capacitors Part I The dielectric composition

Several sintering aids were tested to lower the CaZrO₃ ceramic sintering temperature. Numerous additions are shown to lower the densification temperature and to promote the dielectric properties with a QF product, an insulating resistivity and a permittivity enhancement, and a lowering of the temperature coefficient . A combination of dopants was tested and optimised, resulting in a low temperature sintering ceramic based on CaZrO₃, LiNO₃, SiO₂ and TiO₂. The samples sintered at 1000°C in oxidising or reducing atmosphere exhibit very attractive properties, with a QF product of nearly 15, 28, a near zero and _i 10¹² · cm. The sintering mechanisms of this ceramic are also debated.