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Low-Temperature Sintering of Pb(Mg1/3Nb2/3)O3–PbTiO3 Ceramics with Addition of PbO–Bi2O3

The Low-temperature sintering has been examined in the preparation process of Pb(Mg1/3Nb2/3)O3–PbTiO3 ceramics. The sintering temperature could be reduced from 950° C to 800° C by addition of PbO–Bi2O3 as a lower-melting-point sintering aid. The dielectric constant of 16000 and loss tangent of 0.02 were obtained for Pb[(Mg1/3Nb2/3)0.95Ti0.05]O3 ceramics fired at 800° C with 2 mol% of PbO–Bi2O3. These low-temperature sintering dielectric materials are very promising for use in fabrication of printed thick-film capacitors.