A low-firing microwave dielectric material in Li2O–ZnO–Nb2O5 system
2010; Elsevier BV; Volume: 64; Issue: 22 Linguagem: Inglês
10.1016/j.matlet.2010.07.073
ISSN1873-4979
Autores Tópico(s)Advanced ceramic materials synthesis
ResumoLiZnNbO4 ceramic was fabricated by the conventional solid state reaction method and its microwave dielectric properties were reported for the first time. The phase structure, microstructure, and sintering behavior were also investigated. The LiZnNbO4 ceramic could be well densified at around 950 °C and demonstrated high performance microwave dielectric properties with a low relative permittivity ~ 14.6, a high quality factor (resonant frequency/dielectric loss) ~ 47, 200 GHz (at 8.7 GHz), and a negative temperature coefficient of resonant frequency approzmiately −64.5 ppm/°C. The LiZnNbO4 ceramic is chemically compatible with Ag electrode material at its sintering temperature. It can be a promising microwave dielectric material for low-temperature co-fired ceramic technology.
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