Abstract

The (1-x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 (PMN-PT) (0.10 ≤ x ≤ 0.35) ceramics were prepared by the columbite method. As the PT content increases, the ferroelectric state of PMN-PT system transforms gradually from the relaxor ferroelectric state to the normal ferroelectric state. The maximum electric-field induced strain reaches 0.25% at 32 kV/cm for the sample of x = 0.30 due to its piezoelectric character. The P-E loop, domain structure and dielectric property of (1-x)PMN-xPT clarify the contribution of domain to the large strain.

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