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0.42Pb(Mg0.335Nb0.665)O3–0.26Pb(In0.5Nb0.5)O3–0.32PbTiO3 (PMINT): x % Eu2O3 (x = 0, 1, 1.5, 2 and 2.5) ternary ceramics were prepared using solid-state reaction technique. The powder X-ray diffraction analysis confirmed the diffusion of Eu3+ ions in the PMINT lattice and tetragonal structure in the P4mm space group. The temperature and frequency dependence of dielectric measurement revealed the relaxor such as behaviour and high Curie temperature (Tc ~ 180 °C) achieved for PMINT: 1% Eu ceramic. High remnant polarization (Pr ~ 28.09 µC/cm2) and coercive field (Ec ~ 13.36 kV/cm) were attained for PMINT: 1% Eu and PMINT: 2% Eu samples, respectively. An improved piezoelectric charge coefficient d33 ~ 462 pC/N was found for PMINT: 1.5% Eu. The unipolar strain vs electric field (S–E) hysteresis loops were investigated and the maximum strain Smax = 0.11% for PMINT: 2.5% Eu and the piezoelectric strain coefficient d33* = 387 pm/V for PMINT: 1.5% Eu. This work provides a new way to fabricate Eu-doped PMINT ternary ceramics, both piezoelectric and induced strain properties can be enhanced simultaneously. [ABSTRACT FROM AUTHOR]

The ternary 0.39Bi(Ni 1/2 Ti 1/2)O 3 –0.20PbZrO 3 –0.41PbTiO 3 :x(Bi 2 O 3 /PbO) [x = 0, 1, and 2 wt%] ceramics were synthesized via solid-state sintering technique. The impact of excess addition on structural and electrical properties was investigated. PXRD results confirmed the diffusion of excess addition in the 0.39Bi(Ni 1/2 Ti 1/2)O 3 –0.20PbZrO 3 –0.41PbTiO 3 (BNPZT) lattice, exhibiting the perovskite structure with major rhombohedral (R3c) and minor tetragonal (P4mm) phases. The microstructure of the samples exhibits average grain size distribution (<8 μm). The temperature and frequency-dependent dielectric measurement revealed the relaxor-like ferroelectric behaviour and curie temperature (T c ∼290 °C) observed in BNPZT:1 Pb ceramics. The improved remnant polarization (P r ∼ 23.47 μC/cm2) and coercive field (E c ∼16. 13 kV/cm) were obtained in BNPZT:2 Pb ceramics. The enhanced piezoelectric charge coefficient (d 33 ∼ 496 pC/N) and maximum strain (S max ∼0.12 %) were obtained for BNPZT. The least asymmetric factor (γ s) illustrates the lower concentration of inherent defects in BNPZT:1(Bi/Pb) ceramics. This study provides insight into microstructural and electrical properties tuning and paves the way for designing piezoelectric materials. [Display omitted] [ABSTRACT FROM AUTHOR]