Ferroelectrics are essential components in a wide range of applications, including ultrasonic transducers, sensors, and actuators. In the single crystal form, relaxor-PbTiO3 (PT) piezoelectric materials have been extensively studied due to their ultrahigh piezoelectric and electromechanical properties. In this article, a perspective and future development of relaxor-PT crystals are given. Initially, various techniques for the growth of relaxor-PT crystals are reviewed, with crystals up to 100 mm in diameter and 200 mm in length being readily achievable using the Bridgman technique. Second, the characterizations of dielectric and electromechanical properties are surveyed. Boundary conditions, including temperature, electric field, and stress, are discussed in relation to device limitations. Third, the physical origins of the high piezoelectric properties and unique loss characteristics in relaxor-PT crystals are discussed with respect to their crystal structure, phase, engineered domain configuration, macr...

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High performance ferroelectric relaxor-PbTiO3 single crystals: Status and perspective

Advantages and Challenges of Relaxor-PbTiO3 Ferroelectric Crystals for Electroacoustic Transducers- A Review.

Ferroelectric materials and their applications

Phase Transitions in Ferroelastic and Co-Elastic Crystals

High efficiency bi-harvesting light/vibration energy using piezoelectric zinc oxide nanorods for dye decomposition

From Smart Materials to Piezo-composites Effective Electromechanical Properties in Piezo-Composites Non-monotonic Volume Fraction Dependences of Effective Properties in a-ss Ceramic / Polymer Piezo-composites Piezoelectric Response of Porous Ceramic and Composite Materials based on (Pb, Zr)TiO3 Effective Properties in Novel Piezo-composites based on Relaxor-ferroelectric Single Crystals Comparison of Results on Two-component Piezo-composites Conclusions

Electromechanical Properties in Composites Based on Ferroelectrics

Understanding the effect of porosity on the polarisation-field response of ferroelectric materials

Modern Piezoelectric Energy-Harvesting Materials

Piezoelectric Medium and Its Electromechanical Properties.- Orientation Effects and Anisotropy of Properties in Single Crystals.- Orientation Effects and Anisotropy of Properties in 2-2 and Related Composites.- Orientation Effects and Anisotropy of Properties in 1-3 and Related Composites.- Orientation Effects and Anisotropy of Properties in 0-3 Composites.- Microgeometry - Properties - Anisotropy Relations in Piezo-active Composites: New Trends.

Piezo-Active Composites: Orientation Effects and Anisotropy Factors

Effective piezoelectric coefficients e 33*, d 33*, g 33*, and h 33*, squared figures of merit d 33*g 33* and dh *gh *, and other related parameters of novel 0–3 and 0–3–0 composites based on single crystals of relaxor-ferroelectric solid solutions of (1−x)Pb(Mg1/3Nb2/3)O3−xPbTiO3 are studied using the effective field method, effective medium method and finite element method. The volume-fraction dependences of a number of parameters and figures of merit are determined using the above methods and compared for composites with aligned prolate spheroidal inclusions. Four parameter ratios that determine interconnections between the effective electromechanical constants of the 0–3-type composites are first introduced. These parameter ratios are used to interpret the longitudinal dielectric and piezoelectric response of composite structures with prolate inclusions that exhibit high piezoelectric activity. The role of piezoelectric anisotropy and activity of the composite components in forming the longitudinal pie...

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Vitaly Yu. Topolov

Papers

Electromechanical Properties in Composites Based on Ferroelectrics

Understanding the effect of porosity on the polarisation-field response of ferroelectric materials

Modern Piezoelectric Energy-Harvesting Materials

Piezo-Active Composites: Orientation Effects and Anisotropy Factors

Analysis of the Piezoelectric Performance of Modern 0–3-Type Composites Based on Relaxor-Ferroelectric Single Crystals