Crystal structure,microstructure and microwave dielectric properties of novel MgAl2Ti3O10 ceramic |
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| Authors: | Huanfu Zhou Wendong Sun Jin Huang Kangguo Wang Xiuli Chen Xiaobin Liu Hong Ruan |
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| Affiliation: | 1.Guangxi Ministry-Province Jointly-Constructed Cultivation Base for State Key Laboratory of Processing for Non-ferrous Metal and Featured Materials, Guangxi Key Laboratory in Universities of Clean Metallurgy and Comprehensive Utilization for Non-ferrous Metals Resources, Collaborative Innovation Center for Exploration of Hidden Nonferrous Metal Deposits and Development of New Materials in Guangxi, School of Materials Science and Engineering,Guilin University of Technology,Guilin,China |
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| Abstract: | In the present work, a novel MgAl2Ti3O10 ceramic was obtained using a traditional solid-state reaction method. X-ray diffraction and energy dispersive spectrometer showed that the main MgAl2Ti3O10 phase was formed after sintered at 1300–1450 °C. With rising the sintering temperature from 1300 to 1450 °C, the bulk density (ρ), relative permittivity (ε r ) and Q?×?f value firstly increased, reached the maximum values (3.61 g/cm3, 14.9, and 26,450 GHz) and then decreased. The temperature coefficient of resonator frequency (τ f ) showed a slight change at a negative range of ??94.6 to ??83.7 ppm/°C. When the sintering temperature was 1400 °C, MgAl2Ti3O10 ceramics exhibited the best microwave dielectric properties with Q?×?f?=?26,450 GHz, ε r ?=?14.9 and τ f ?=???83.7 ppm/°C. |
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