Dielectric and Piezoelectric Properties of Pb(In1/2Nb1/2)O3–Pb(Mg1/3Nb2/3)O3–PbTiO3 Ternary Ceramic Materials near the Morphotropic Phase Boundary

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The physical and electrical properties of $x$Pb(In1/2Nb1/2)O3(PIN)–$y$Pb(Mg1/3Nb2/3)O3(PMN)–$z$PbTiO3(PT) (PIMNT $100x$/$100y$/$100z$) ternary ceramic materials near the morphotropic phase boundary (MPB) were investigated. The MPB follows an almost linear region between the PIMNT 63/0/37 and PIMNT 0/68/32 MPB compositions of the binary systems. All the sintered ceramics show a complete perovskite structure. The maximum dielectric constants decrease as the function of PIN content increases. The maximum electromechanical coupling factor, $k_{\text{p}}=67.6$%, is found at PIMNT 24/42/34, where dielectric constant, $\varepsilon_{33}^{\text{T}}/\varepsilon_{0}=2,120$, piezoelectric constant, $d_{33}=505$ pC/N, and Curie temperature, $T_{\text{c}}=219$°C, are obtained.
INSTITUTE OF PURE AND APPLIED PHYSICSの論文
2003-02-15