Sintering and dielectric properties of Bi1.5ZnNb1.5O7 cubic pyrochlore ceramics via high-energy milling technology |
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| Authors: | Weihong Liu Hong Wang |
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| Affiliation: | 1. School of electronic engineering, Xi??an University of Posts and Telecommunications, Xi??an, 710061, China
2. Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education, Xi??an Jiaotong University, Xi??an, 710049, China
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| Abstract: | The dense Bi1.5ZnNb1.5O7 cubic pyrochlore ceramics is synthesized by high-energy milling technology from the coarse Bi1.5ZnNb1.5O7 cubic pyrochlore powders prepared by solid state route. The sintering and dielectric properties of the Bi1.5ZnNb1.5O7 cubic pyrochlore ceramics are investigated, which show that the sintering temperature of the prepared ceramics could be effectively lowered to 800°C and the bulk density reach 6.889 g/cm3 approximately 97% of the theoretical density of Bi1.5ZnNb1.5O7 cubic pyrochlore ceramics. The excellent dielectric properties of the ceramics sintered at 850°C has been obtained with the relative permittivity of 160 and the dielectric loss of 10?4. This route would be a low-cost and mass production for lowering the sintering temperature of the Bi1.5ZnNb1.5O7 cubic pyrochlore ceramics without sintering aids. |
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