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Microwave Dielectric Properties of Aluminum‐Substituted Ba 6−3 x Nd 8+2 x Ti 18 O 54 Ceramics
Author(s) -
Chen Hetuo,
Tang Bin,
Xiong Zhe,
Zhang Shuren
Publication year - 2016
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.12516
Subject(s) - materials science , ceramic , dielectric , temperature coefficient , analytical chemistry (journal) , relative permittivity , microwave , permittivity , diffraction , aluminium , optics , metallurgy , composite material , optoelectronics , physics , chemistry , chromatography , quantum mechanics
According to solid‐state reaction routine, microwave dielectric ceramics of aluminum‐supplanted Ba 6−3 x Nd 8+2 x Ti 18 O 54 (0.5 ≤ x ≤ 0.75) ceramics were synthesized and the effects of composition on microwave dielectric properties were determined. As x value increasing from 0.5 to 0.75, with high‐quality factor values ( Q × f > 8000 GH z), both dielectric constant (ε r ) and temperature coefficient of resonant frequency (τ f ) dropped. The X‐ray diffraction patterns showed a single phase for all compositions. Typically, the research gained temperature coefficients at resonant frequency around + 10 ppm/°C, while kept high relative permittivity and quality factor value.
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