Premium
Microwave Dielectric Properties of 5Li 2 O–0.583Nb 2 O 5 –3.248TiO 2 Ceramics with V 2 O 5
Author(s) -
Zeng Qun,
Li Wei,
Shi Jianlin,
Guo Jingkun
Publication year - 2006
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2006.01227.x
Subject(s) - materials science , microstructure , ceramic , sintering , dielectric , microwave , analytical chemistry (journal) , doping , phase (matter) , mineralogy , composite material , optoelectronics , chemistry , physics , organic chemistry , chromatography , quantum mechanics
The effects of V 2 O 5 addition on the sintering behavior, microstructure, and the microwave dielectric properties of 5Li 2 O–0.583Nb 2 O 5 –3.248TiO 2 (LNT) ceramics have been investigated. With addition of low‐level doping of V 2 O 5 (≤2 wt%), the sintering temperature of the LNT ceramics could be lowered down to around 920°C due to the liquid phase effect. A secondary phase was observed at the level of 2 wt% V 2 O 5 addition. The addition of V 2 O 5 does not induce much degradation in the microwave dielectric properties but lowers the τ f value to near zero. Typically, the excellent microwave dielectric properties of ɛ r =21.5, Q × f =32 938 GHz, and τ f =6.1 ppm/°C could be obtained for the 1 wt% V 2 O 5 ‐doped sample sintered at 920°C, which is promising for application of the multilayer microwave devices using Ag as an internal electrode.