Title :
Lead-based relaxor ferroelectric ceramics for high performance low firing MLCs
Author :
Gui, Zhrlun ; Wang, Yu ; Longtu Li
Author_Institution :
Dept. of Mater. Sci. & Eng., Tsinghua Univ., Beijing, China
Abstract :
The composition, microstructure and dielectric properties of lead-based relaxor ferroelectric ceramics used for high performance low firing MLCs have been studied systematically. The Y5V, Y5U and X7R MLCs fabricated not only exhibit high dielectric constant, low sintering temperature but also have low ageing rate and good biased field behaviour and breakdown strength and excellent reliability comparable to that of normal middle and high sintering temperature MLCs. Low-firing PMN-based MLC has been commercialized and shows a wide application prospect
Keywords :
ageing; ceramic capacitors; electric breakdown; ferroelectric capacitors; lead compounds; permittivity; piezoceramics; reliability; sintering; PMN-PbZrO3NbO3-PbTiO3; PbMgO3NbO3-PbZrO3NbO3-PbTiO3; PbMgO3WO3ZrO3TiO3; X7R; Y5U; Y5V; ageing rate; biased field behaviour; breakdown strength; dielectric constant; dielectric properties; low firing MLCs; multilayer ceramic capacitors; relaxor ferroelectric ceramics; reliability; sintering temperature; Aging; Automotive materials; Ceramics; Dielectric materials; Ferroelectric materials; Firing; High-K gate dielectrics; Microstructure; Relaxor ferroelectrics; Temperature;
Conference_Titel :
Applications of Ferroelectrics, 1996. ISAF '96., Proceedings of the Tenth IEEE International Symposium on
Conference_Location :
East Brunswick, NJ
Print_ISBN :
0-7803-3355-1
DOI :
10.1109/ISAF.1996.602777
