Determination of the PIC700 Ceramic’s Complex Piezo-Dielectric and Elastic Matrices from Manageable Aspect Ratio Resonators

Abstract

Achieving good piezoelectric properties, such as the widely reported d33 charge coefficient, is a good starting point in establishing the potential applicability of piezoceramics. However, piezoceramics are only completely characterized by consistent piezoelectric-elastic-dielectric material coefficient matrices in complex form, i.e., including all losses. These matrices, which define the various alternative forms of the constitutive equations of piezoelectricity, are required for reliable virtual prototyping in the design of new devices. To meet this need, ten precise and accurate piezoelectric dielectric and elastic coefficients of the material, including all losses, must be determined for each alternative. Due to the difficulties arising from the coupling of modes when using the resonance method, this complete set of parameters is scarcely reported. Bi0.5Na0.5TiO3-based solid solutions are already commercially available in Europe and Japan. Here, we report a case study of the determination of these sets of material coefficients (diα, giα, eiα and hiα; sE,Dαβ and cE,Dαβ; εTik and εSik; and βTik and βSik), including all losses, of the commercial PIC700 eco-piezoceramic. Plate, disk, and cylinder ceramic resonators of a manageable aspect ratio were used to obtain all the material coefficients. The validation procedure of the matrices is also given by FEA modeling of the considered resonators.

Enhanced Piezocatalytic Activity in Bi1/2Na1/2TiO3for Water Splitting by Oxygen Vacancy Engineering

“…All samples had their BNT polar axis oriented along the z axis. The elastic constants C 11 , C 12 , C 13 , C 33 , C 55 , and C 66 of BNT were 13.10, 3.68, −3.12, 12.29, 4.81, and 4.70 (×10 10 N m –2 ), respectively, with piezoelectric stress constants e 31 , e 33 , and e 15 of −6.35, 11.08, and 4.95 cm –2 , respectively. , Piezopotential outputs from a 10 8 Pa z axis pressure load on a sample of various particle sizes are shown in Figure S8. Based on ionic charge theory, the piezopotential generated by the non-centrosymmetric structure was directly proportional to the applied pressure.…”

Ferroelectric, Dielectric and Electromechanical Performance of Ba0.92Ca0.08Ti0.95Zr0.05O3 Ceramics with an Enhanced Curie Temperature

“…Decoupling from the overtones of the planar mode was achieved for the thickness resonance of the thin disk by separating the frequencies of the radial and thickness resonances using samples with a high diameter-to-thickness ratio. However, this is a mode that is always affected by many other shear or more complex modes [ 37 ]. This is observed in the R and G curves of Figure 4 b.…”

Processing, microstructure, electrical properties and cytotoxic behaviour of lead-free 0.99K0.5Na0.5NbO3-0.01BiFeO3 piezoceramics prepared using Spark Plasma Sintering (SPS)

“…An automatic iterative method was used in the analysis of the impedance curves to determine the complex electromechanical, elastic and dielectric properties of the ceramics. [13,14] The toxicological potential of the prepared samples was determined by in vitro screening employing two model organisms that were selected as representatives of human (A549 cell line) and environmental exposures (Saccharomyces cerevisiae), as described in detail elsewhere. [15] The materials under study (SA1, SA2, SA3, SA4 and SA5) and the PZT (commercial reference sample, Meggit Ferroperm PZ26) were smashed in a mortar and sieved (0.125 mm mesh size) to obtain a uniform powder.…”