A new Li2O-Nb2O5-TiO2microwave dielectric ceramic composite

✍ Scribed by Zeng, Qun ;Li, Wei ;Shi, Jian-lin ;Guo, Jing-kun

• Publisher: John Wiley and Sons
• Year: 2006
• Tongue: English
• Weight: 148 KB
• Volume: 203
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/pssa.200622301

✦ Synopsis

Abstract

In the Li~2~O–Nb~2~O~5~–TiO~2~ (LNT) system, a new dielectric ceramic composite with special structure has been found and investigated. The compound is composed of two phases, the “M‐phase” and Li~2~TiO~3~ solid solution phase. This ceramic composite has a low sintering temperature (∼1100 °C) and good microwave dielectric properties of high permittivity (∼49), high Q × f value up to 9500 GHz, and small tempe‐ rature coefficient (∼22 ppm/°C). Furthermore, by adding 1 wt% B~2~O~3~, the ceramic could be densified at very low sintering temperatures (≯900 °C) and also have good microwave dielectric properties of ϵ ~r~ = 49.2, Q × f = 8839 GHz, which suggests that the ceramic could be a promising candidate for multilayer low‐temperature co‐fired ceramics applications. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)