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Stabilities and piezoelectric properties of morphotropic phase boundary composition 0.2Pb(Mg1/3Nb2/3)O3–0.38PbZrO3–0.42PbTiO3 ternary piezoceramics
- Upadhyay, Ashutosh, Cha, Hyun Ae, Jeon, Jae-Ho
- Journal of materials science 2019 v.54 no.9 pp. 6799-6806
- ceramics, electrical properties, temperature
- The phase stabilities and piezoelectric properties of morphotropic phase boundary ternary piezoceramics (0.2Pb(Mg₁/₃Nb₂/₃)O₃–0.38PbZrO₃–0.42PbTiO₃) are investigated as a function of sintering conditions. The tetragonality (c/a) of the morphotropic phase boundary, where the rhombohedral and tetragonal phases coexist (space groups R3m and P4mm, respectively), is affected by the sintering temperature and time. This tetragonality affects the piezoelectric properties. The results demonstrate that a large tetragonality is undesirable for the piezoelectric properties. The structure and properties of morphotropic phase boundary piezoelectric materials are strongly correlated.