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Sintering Behavior and Dielectric Properties of Ultra‐Low Temperature Fired Silver Molybdate Ceramics
Author(s) -
Zhou Di,
Li WenBo,
Pang LiXia,
Guo Jing,
Qi ZeMing,
Shao Tao,
Yue ZhenXing,
Yao Xi
Publication year - 2014
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/jace.13159
Subject(s) - ceramic , materials science , sintering , permittivity , dielectric , relative permittivity , temperature coefficient , microwave , polarization (electrochemistry) , molybdate , analytical chemistry (journal) , ionic bonding , mineralogy , composite material , metallurgy , optoelectronics , chemistry , ion , physics , chromatography , quantum mechanics , organic chemistry
Ag 2 MoO 4 ceramic was prepared by using the solid‐state reaction method, which could be sintered at 450°C for 2 h, having a relative permittivity of 8.08, a Qf value of 17 000 GHz, and a temperature coefficient of resonance frequency about −133 ppm/°C. Ag 2 MoO 4 ceramic was chemically compatible with silver but reacted seriously with aluminum to form ( Ag 0.5 Al 0.5 ) MoO 4 during the sintering. The fitting of infrared spectra and the Shannon's additive rule were employed to study intrinsic dielectric behaviors of the ceramics at microwave region. Ionic displacive polarization and the electronic polarization contributed almost equally to the dielectric permittivity of the ceramic at microwave region. The Ag 2 MoO 4 ceramics could be a good candidate for ultra‐low temperature co‐fired microwave devices.