The Nano-Scale Modified BaTiO3 Morphology Influence on Electronic Properties and Ceramics Fractal Nature Frontiers

Abstract

The BaTiO3 ceramics applications based on electronic properties have very high gradient scientific and industrial-technological interests. Our scientific research has been based on nano BaTiO3 modified with Yttrium based organometallic salt (MOD-Y). The samples have been consolidated at a sintering temperature of 1350 °C. Within the study, the new frontiers for different electronic properties between the layers of BaTiO3 grains have been introduced. The research target was grain boundary investigations and the influence on dielectric properties. After scanning electron microscopy and dielectric measurements, it has been established that modified BaTiO3 samples with larger grains showed a better compact state that led to a higher dielectric constant value. DC bias stability was also investigated and showed a connection between the grain size and capacitance stability. Analyses of functions that could approximate experimental curves were successfully employed. Practical application of fractal corrections was performed, based on surface (αs) and pore size (αp) corrections, which resulted in obtainment of the relation between the capacitance and Curie temperature. Successful introduction of fractal corrections for capacitance-Curie temperature dependence for a set of experimental data is an important step towards further miniaturization of intergranular capacitors.

Structural and microstructural features of lead‐free BNT–BT thin films: Nanoscale electromechanical response analysis

“…In this context, intergranular phenomena at the nanoscale dimension could be investigated by considering their fractal nature 88 . Such analyses significantly contribute for researches devoted to microelectronic miniaturization and undoubtedly provide new perspectives for the application of ferroelectric and related materials in electroelectronic devices with very high integration technology 89 . Therefore, in order to better understand the mechanisms responsible for nucleation of nanodomains as well as the change in domain wall geometry under the action of an external electric field, a fractal analysis has also been performed.…”

“…88 Such analyses significantly contribute for researches devoted to microelectronic miniaturization and undoubtedly provide new perspectives for the application of ferroelectric and related materials in electroelectronic devices with very high integration technology. 89 Therefore, in order to better understand the mechanisms responsible for nucleation of nanodomains as well as the change in domain wall geometry under the action of an external electric field, a fractal analysis has also been performed. The fractal dimension from the OP-PFM images was calculated by using the cube counting method with the above-mentioned image data analysis.…”

Time-fractional Landau–Khalatnikov model applied to numerical simulation of polarization switching in ferroelectrics

“…Numerous works have established that domain configurations of ferroelectric systems possess both fractal structures and a self-similar character of nucleation and development of domains. These studies are based on methods of fractal and multifractal analysis of raster microscopic images of domain structures and time series presented by polarization responses [8][9][10][11][12][13][14][15][16][17][18][19].…”