Issue 11, 2015

Phase composition, crystal structure, infrared reflectivity and microwave dielectric properties of temperature stable composite ceramics (scheelite and zircon-type) in BiVO4–YVO4 system

Abstract

(1 − x)BiVO4xYVO4 (x ≤ 0.65) ceramics were prepared using the solid state reaction method. X-ray diffraction, Raman spectra and scanning electron microscopy techniques were employed to study the phase composition and crystal structure. The ceramic samples were composed of both monoclinic scheelite and tetragonal zircon-type phases. The best microwave dielectric properties, with a permittivity ∼45, a Qf value 14 000 GHz and a temperature coefficient of resonant frequency (TCF) +10 ppm °C−1, were obtained in the 0.81BiVO4–0.19YVO4 ceramic sintered at 870 °C for 2 h. Far-infrared spectra study showed that Bi–O oscillations dominate microwave dielectric polarizations in the (1 − x)BiVO4xYVO4 ceramics. The (1 − x)BiVO4xYVO4 ceramics might be potential candidates for microwave devices application and low temperature co-fired ceramic technology (LTCC).

Graphical abstract: Phase composition, crystal structure, infrared reflectivity and microwave dielectric properties of temperature stable composite ceramics (scheelite and zircon-type) in BiVO4–YVO4 system

Article information

Article type
Paper
Submitted
29 Nov 2014
Accepted
14 Jan 2015
First published
16 Jan 2015

J. Mater. Chem. C, 2015,3, 2582-2588

Author version available

Phase composition, crystal structure, infrared reflectivity and microwave dielectric properties of temperature stable composite ceramics (scheelite and zircon-type) in BiVO4–YVO4 system

D. Zhou, W. Li, H. Xi, L. Pang and G. Pang, J. Mater. Chem. C, 2015, 3, 2582 DOI: 10.1039/C4TC02728K

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