Journal of Advanced Dielectrics, Volume. 13, Issue 3, 2350011(2023)
Microstructure, domain structure, ferroelectric and piezoelectric properties of textured bismuth-containing ceramics
In this report, the processes of texture formation in grain-oriented ferroelectric ceramics based on layer-structured ferroelectric Bi4Ti3O2 (LSBT) prepared by hot forging method are considered. The microstructural and X-ray methods revealed the axial textured formation in ferroelectric ceramic that are used to estimate the orientation factor of ceramics. For the first time, the domain structure changes when poling the anisotropic ferroelectric ceramics are investigated. The anisotropy of electromechanical, piezoelectric and ferroelectric properties of ferroelectric ceramics due to the crystal texture existence in it is studied. The aim of this study is to study the processes of crystalline texture formation in polycrystalline BLSF and to establish the dependence of the electrophysical properties of ceramics on the degree of texturing. Ceramics were textured using the hot stamping (HS) method developed at the Research Institute of Physics. The mechanism of the method is that the workpiece is subjected to uniaxial pressure and free radial deformation occurs due to the plastic flow of the material until the workpiece fills the free volume of the mold, which is created by placing the workpiece in the mold with a gap. The study of the microstructure of ceramics showed that an increase in the firing temperature in the range 950–1050
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E. I. Sitalo, O. A. Bunina, V. G. Smotrakov, N. V. Malomyzheva, N. A. Boldyrev. Microstructure, domain structure, ferroelectric and piezoelectric properties of textured bismuth-containing ceramics[J]. Journal of Advanced Dielectrics, 2023, 13(3): 2350011
Category: Research Articles
Received: Jan. 16, 2023
Accepted: Apr. 3, 2023
Published Online: Jul. 18, 2023
The Author Email: E. I. Sitalo (sitalo@sfedu.ru), O. A. Bunina (sitalo@sfedu.ru), V. G. Smotrakov (sitalo@sfedu.ru), N. V. Malomyzheva (sitalo@sfedu.ru), N. A. Boldyrev (sitalo@sfedu.ru)