Microscopic texture characterisation in piezoceramics

Abstract

In polycrystalline piezoelectric ceramics, ferroelectric domain texture is the most important parameter influencing the attainable electromechanical performance. High piezoelectric properties are obtained when the maximum poling of the material is achieved. This condition can be favoured by modifying material composition, poling routes or by proper grain texturing. Hence, it is necessary to characterise domain texture, in order to develop piezoceramics with improved performance. In this review, an outline of the methods for ferroelectric domain texture determination will be given, with focus on microscopic techniques. The advantages and complementarity of methods like X-ray and neutron diffraction, electron diffraction, and Raman spectroscopy will be highlighted.

Super-coercive electric field hysteresis in ferroelectric plastic crystal tetramethylammonium bromotrichloroferrate(iii)

“…The result demonstrates that it may be possible to manipulate the degree of structural orientation during pressing, which could be highly advantageous for engineering functional properties due to the crystallographic orientation dependence of properties such as the dielectric constant and piezoelectric coefficient. [22][23][24] FTIR and Raman spectroscopy were also used to analyze the pressed polycrystalline material (Fig. 2).…”

In situ combined stress‐ and temperature‐dependent Raman spectroscopy of Li‐doped (Na,K)NbO3

“…As such, polarized Raman spectroscopy to investigate the domain texture of piezoelectric ceramics is a critical method. 32,[44][45][46] These important works have demonstrated the possibilities and challenges related to the experimental and domain tex-ture data analysis procedure for the polycrystalline piezoelectric ceramics. For instance, estimating the orientation distribution function (ODF), a necessary parameter to quantify texture, of polycrystalline ceramics from the polarized Raman spectroscopy data, is challenging.…”

Piezoelectric glass‐ceramics: Crystal chemistry, orientation mechanisms, and emerging applications

“…Understanding the influence of an electric field on chemical composition and domain alignment is needed for quantifying piezoelectric properties in ferroelectric glass‐ceramics. Currently, knowledge of electronic properties in ceramics greatly exceeds knowledge of glass‐ceramics, pointing toward a significant challenge when it comes to characterizing and quantifying piezoelectric properties 177 . More work must be performed in this area to fully comprehend structure–property relationships in glass‐ceramics through studying the glass–crystal interface, isolating the dielectric contributions of the crystalline phase, poling ferroelectric glass‐ceramics, and developing equations to accurately extract piezoelectric properties given the multicomponent nature of glass‐ceramics.…”