Journal of the American Ceramic Society, Vol.97, No.9, 2915-2920, 2014
Phase Evolution and Microwave Dielectric Properties of (Bi1-xFex)VO4(x <= 0.40) Ceramics
In the present work, (Bi1-xFex)VO4 (x0.40) ceramics were prepared using the solid-state reaction method. All the ceramics could be well densified at sintering temperatures below 800 degrees C. X-ray diffraction (XRD) results showed that monoclinic solid solution was formed within x0.08. When x0.10, both monoclinic scheelite and FeVO4 phases were detected. The (Bi0.92Fe0.08)VO4 sample sintered at 720 degrees C for 2h had a permittivity of 57.5 and a Q(f) value of 15000GHz. 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.