Journal Article

Effects of (Mg1/3Sb2/3)4+ substitution on the structure and microwave dielectric properties of Ce2Zr3(MoO4)9 ceramics

Sun, Huazhang, Tao, Wenhong, Zhou, Xu, Sun, Jiajia, Zhang, Ningkang, Wu, Haitao, Liu, Lintao

2021

Overview

Ce 2 [Zr 1− x (Mg 1/3 Sb 2/3 ) x ] 3 (MoO 4 ) 9 (0.02 ⩽ x ⩽ 0.10) ceramics were prepared by the traditional solid-state method. A single phase, belonging to the space group of R 3 ¯ c , was detected by using X-ray diffraction at the sintering temperatures ranging from 700 to 850 °C. The microstructures of samples were examined by applying scanning electron microscopy (SEM). The crystal structure refinement of these samples was investigated in detail by performing the Rietveld refinement method. The intrinsic properties were calculated and explored via far-infrared reflectivity spectroscopy. The correlations between the chemical bond parameters and microwave dielectric properties were calculated and analyzed by Phillips-van Vechten-Levine (P-V-L) theory. Ce 2 [Zr 0.94 (Mg 1/3 Sb 2/3 ) 0.06 ] 3 (MoO 4 ) 9 ceramics with excellent dielectric properties were sintered at 725 °C for 6 h ( ε r = 10.37, Q × f = 71,748 GHz, and τ f = −13.6 ppm/°C, ε r is the dielectric constant, Q × f is the quality factor, and τ f is the temperature coefficient of resonant frequency).

• Publisher: Tsinghua University Press,School of Environmental and Material Engineering,Yantai University,Yantai 264005,China%School of Materials Science and Engineering,University of Jinan,Jinan 250022,China
• Subject: (Mg1/3Sb2/3) doping / Ceramics / Characterization and Evaluation of Materials / Chemical bonds / Chemistry and Materials Science / Composites / Crystal structure / Dielectric properties / Far infrared radiation / Glass / Infrared reflection / Materials Science / Mathematical analysis / microwave dielectric property / Nanotechnology / Natural Materials / Phillips-van Vechten-Levine (P-V-L) theory / Q factors / Research Article / Resonant frequencies / Rietveld method / Structural Materials