Abstract
The effect of glass-phase design on the dielectric properties of PbO-BaO-Na2O-Nb2O5-SiO2 glass–ceramic has been investigated. The glass phase of 36Na NbO3-18(Pb0.6Sr0.4) Nb2O6-46SiO2 glass–ceramic was modified by addition of lead ions, which is expected to optimize the dielectric properties of the SiO2 glass, thus improving the performance of the glass–ceramic composite. Phase composition and dielectric behavior were systematically investigated. Dielectric properties varied as a function of the amount of PbO added. The dielectric constant increased from 515 to 648 when 10 mol.% lead ions (relative to the SiO2 glass) was added to the glass phase. Dielectric breakdown strength also increased slightly, from 5.1 to 7.8 kV/mm, suggesting glass-phase design could be an efficient way of optimizing the dielectric properties of glass–ceramic composites.
Published Version
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