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Phase Evolution and Microwave Dielectric Properties of ( Bi 1− x Fe x ) VO 4 ( x ≤ 0.40) Ceramics
Author(s) -
Zhou Di,
Bin He,
Guo Jing,
Pang LiXia,
Qi ZeMing,
Shao Tao,
Wang QiuPing,
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.13068
Subject(s) - monoclinic crystal system , ceramic , materials science , dielectric , analytical chemistry (journal) , sintering , scheelite , x ray crystallography , permittivity , microwave , mineralogy , phase (matter) , diffraction , crystal structure , crystallography , optics , chemistry , metallurgy , physics , optoelectronics , tungsten , organic chemistry , chromatography , quantum mechanics
In the present work, ( Bi 1− x Fe x ) VO 4 ( x ≤ 0.40) ceramics were prepared using the solid‐state reaction method. All the ceramics could be well densified at sintering temperatures below 800°C. X ‐ray diffraction ( XRD ) results showed that monoclinic solid solution was formed within x ≤ 0.08. When x ≥ 0.10, both monoclinic scheelite and FeVO 4 phases were detected. The ( Bi 0.92 Fe 0.08 ) VO 4 sample sintered at 720°C for 2 h had a permittivity of 57.5 and a Q f value of 15 000 GHz. The IR reflectivity was fitted to study the intrinsic dielectric properties, showing that the majority of the dielectric contribution for this system at microwave region was attributed to the absorptions of structural phonon oscillation in infrared region.