US EPA

4259068 

Journal Article 

Ultra low loss microwave dielectric properties of Non-stoichiometry [(Mg0.7Zn0.3)](0.95)Co-0.05] 1+delta (Ti1-xSnx) O3+delta ceramics 

Li, BJ; Wang, SihYin; Huang, CL; Chen, YBin 

2014 

Yes 

Ceramic Society of Japan. Journal
ISSN: 1882-0743 

122 

1429 

762-767 

10.2109/jcersj2.122.762 

WOS:000342066500004 

The prepared [(Mg0.7Zn0.3)](0.95)Co-0.05] 1+delta (Ti1-xSnx) O3+delta (delta = 0.02) (x = 0, 0.03, 0.05, 0.07, 0.09, 0.1 and 0.2) ceramics are sintered at 1175-1300 degrees C, the needed sintering temperatures of [(Mg0.7Zn0.3)](0.95)Co-0.05] 1+delta (Ti1-xSnx)O3+delta (delta = 0.02) ceramics slightly increased with the increase of Sn4+ content. The sintering characteristics of [(Mg0.7Zn0.3)](0.95)Co-0.05] 1+delta (Ti1-xSnx)O3+delta (delta = 0.02) ceramics are developed by the X-ray diffraction patterns and SEM observations to find the influence of sintering temperatures and Sn4+ content on the crystal structure and the grain growth. The influence Sn4+ content and sintering temperatures on the quality values (Q x f) and the temperature coefficient of resonant frequency (tau(f) values) of [(Mg0.7Zn0.3)](0.95)Co-0.05] 1+delta (Ti1-xSnx)O3+delta (delta = 0.02) ceramics at microwave frequency are well developed in this study. As an optimal compose, [(Mg0.7Zn0.3)](0.95)Co-0.05] 1+delta (Ti1-xSnx) O3+delta (delta = 0.02) successfully demonstrated a dielectric constant of 16.1, a Qxf of 300,000GHz and a temperature coefficient of resonent frequency value of -53.8ppm/degrees C after firing at a relatively lower sintering temperature of 1250 degrees C. (C) 2014 The Ceramic Society of Japan. All rights reserved. 

Dielectric; Microwave ceramics; Dielectric resonators