The microstructure and properties of Ag(Nb0.8Ta0.2)1?x
(Mn0.5W0.5)
x
O3 ceramic system |
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引用本文: | 肖谧.The microstructure and properties of Ag(Nb0.8Ta0.2)1?x
(Mn0.5W0.5)
x
O3 ceramic system[J].武汉理工大学学报(材料科学英文版),2012,27(4):735-739. |
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作者姓名: | 肖谧 |
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作者单位: | School of Electronic Information Engineering,Tianjin University |
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摘 要: | The microstructure and dielectric properties of Ag(Nb0.8Ta0.2)1-x(Mn0.5W0.5)xO3(x=0,0.04,0.08,0.12,0.16) ceramic system were investigated.The Ag(Nb0.8Ta0.2)1-x(Mn0.5W0.5)xO3 ceramics were prepared by the traditional solid-state reaction method and were characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM) and Raman spectrometer.The sintering ability and dielectric properties of Ag(Nb0.8Ta0.2)1-x(Mn0.5W0.5)xO3 were found to be improved with the doping of Mn4+ and W6+ ions.The densification temperature of Ag(Nb0.8Ta0.2)1-x(Mn0.5W0.5)xO3 ceramics decreased from 1 080 ℃ to 1 000 ℃ when x increased from 0 to 0.16.Ag(Nb0.8Ta0.2)1-x(Mn0.5W0.5)xO3 ceramic was found to have the best dielectric properties when x=0.08,larger permittivity(■=547) and smaller dielectric loss(tan■=0.00156).
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关 键 词: | dielectric properties silver niobate tantalite MnO2 WO3 |
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