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Effect of V 2 O 5 Doping on the Sintering and Dielectric Properties of M ‐Phase Li 1+ x − y Nb 1− x −3 y Ti x +4 y O 3 Ceramics
Author(s) -
Borisevich Albina Y.,
Davies Peter K.
Publication year - 2004
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.1551-2916.2004.01047.x
Subject(s) - sintering , materials science , ceramic , dielectric , phase (matter) , analytical chemistry (journal) , doping , mineralogy , metallurgy , chemistry , optoelectronics , organic chemistry , chromatography
The effect of the addition of V 2 O 5 on the structure, sintering and dielectric properties of M ‐phase (Li 1+ x − y Nb 1− x −3 y Ti x +4 y )O 3 ceramics has been investigated. Homogeneous substitution of V 5+ for Nb 5+ was obtained in LiNb 0.6(1− x ) V 0.6 x Ti 0.5 O 3 for x ≤ 0.02. The addition of V 2 O 5 led to a large reduction in the sintering temperature and samples with x = 0.02 could be fully densified at 900°C. The substitution of vanadia had a relatively minor adverse effect on the microwave dielectric properties of the M ‐phase system and the x = 0.02 ceramics had [alt epsilon] r = 66, Q × f = 3800 at 5.6 GHz, and τ f = 11 ppm/°C. Preliminary investigations suggest that silver metallization does not diffuse into the V 2 O 5 ‐doped M ‐phase ceramics at 900°C, making these materials potential candidates for low‐temperature cofired ceramic (LTCC) applications.