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Microwave Dielectric Properties of Low‐Firing Li 2 MO 3 (M=Ti, Zr, Sn) Ceramics with B 2 O 3 –CuO Addition
Author(s) -
Pang LiXia,
Zhou Di
Publication year - 2010
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.1551-2916.2010.04152.x
Subject(s) - materials science , sintering , ceramic , analytical chemistry (journal) , permittivity , dielectric , temperature coefficient , mineralogy , metallurgy , composite material , chemistry , optoelectronics , chromatography
In this work, the sintering behaviors, microwave dielectric properties, and chemical compatibility with silver of pure and B 2 O 3 –CuO addition Li 2 MO 3 (M=Ti, Zr, Sn) ceramics were studied. The 1 wt% B 2 O 3 –CuO addition does not affect the phase composition of Li 2 MO 3 (M=Ti, Zr, Sn) and no secondary phase could be observed from XRD analysis. The sintering temperatures can be lowered from above 1200°C to around 900°C by 1 wt% B 2 O 3 –CuO addition. XRD analysis of cofired ceramics indicates that the Li 2 MO 3 (M=Ti, Zr, Sn) ceramics are chemically compatible with silver. With 1 wt% B 2 O 3 –CuO addition, both Li 2 TiO 3 and Li 2 SnO 3 ceramics can be sintered well and possess good microwave dielectric properties with a permittivity of ∼19.67, a Q × f value of ∼46 300 GHz, a temperature coefficient of resonant frequency (TCF) of ∼+31.3 ppm/°C, and a permittivity of 13.73, a Q × f value of 36 400 GHz and a TCF about +27.4 ppm/°C, respectively.