The dielectric and piezoelectric properties of the 0.125Pb(Mg 1/3 Nb 2/3 )O 3 -0.875Pb(Zr x Ti 1- x )O 3 system with 0.4≤ x ≤0.6 were investigated. From the results of XRD and piezoelectric measurement, it was supposed that the composition with x =0.5-0.51 corresponds to MPB between tetragonal and rhombohedral phase. The 4PbO·B 2 O 3 glass frit which has a low flow temperature and a high polarizability is doped to the system. This is helpful to the dielectric and piezoelectric properties of the system. If small amounts of 4PbO·B 2 O 3 glass powder are added to the calcined 0.125PZT-0.875PMN ceramics, the liquid phase is formed during sintering. Hence, the sintering temperature can be reduced and the piezoelectric and dielectric properties are enhanced.
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Wu et al. (1993) studied this question.
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