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

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2020
osnovni rad (4.365Mb)
Authors
Mitić, Vojislav V.
Lazović, Goran
Lu, Chun-An
Paunović, Vesna
Radović, Ivana
Stajčić, Aleksandar
Vlahović, Branislav
Article (Published version)
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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 di erent 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 applicat...ion of fractal corrections was performed, based on surface ( s) and pore size ( p) 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.

Keywords:
ceramics modification / morphology / dielectric properties / fractal corrections
Source:
Applied Sciences, 2020, 10, 3485-
Publisher:
  • Switzerland : MDPI
Projects:
  • Micro- Nanosystems and Sensors for Electric Power and Process Industry and Environmental Protection (RS-32008)
  • Directed synthesis, structure and properties of multifunctional materials (RS-172057)

DOI: 10.3390/app10103485

ISSN: 2076-3417

WoS: 000541440000146

Scopus: 2-s2.0-85085692341
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URI
http://cer.ihtm.bg.ac.rs/handle/123456789/3584
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