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Microwave Dielectric Properties of LiBiW 2 O 8 Ceramics with Low Sintering Temperature
Author(s) -
Zhou Huanfu,
Chen Xiuli,
Fang Liang,
Liu Xiaobin,
Wang Yiliang
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.1551-2916.2010.04162.x
Subject(s) - ceramic , materials science , sintering , temperature coefficient , dielectric , monoclinic crystal system , permittivity , atmospheric temperature range , microwave , phase (matter) , composite material , diffraction , analytical chemistry (journal) , mineralogy , crystal structure , crystallography , chemistry , optics , thermodynamics , optoelectronics , physics , quantum mechanics , organic chemistry , chromatography
Preparation, phase structure, sintering behavior, and microwave dielectric properties of LiBiW 2 O 8 ceramic have been investigated. The LiBiW 2 O 8 ceramic can be well densified in the temperature range from 650° to 750°C for 2–8 h. X‐ray diffraction data show that LiBiW 2 O 8 ceramic has a monoclinic structure coupled with a second unknown phase. The LiBiW 2 O 8 ceramic, sintered at 700°C for 2 h, exhibit microwave dielectric properties with permittivity of 26.5, Q × f of 16400 GHz, and temperature coefficient of resonant frequency (τ f ) of 70 ppm/°C. The addition of 30 mol% TiO 2 to LiBiW 2 O 8 also results in a ceramic composite exhibiting ɛ r ∼30.2, Q × f ∼13 000 GHz and τ f ∼−9 ppm/ o C. However, the reaction between LiBiW 2 O 8 and Ag will affect its further application in low‐temperature cofired ceramic.