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The influence of mechanical activation on the electrical properties of Ba0.77Sr0.23TiO3 ceramics

Authorized Users Only
2014
Authors
Kosanović, Darko
Živojinović, Jelena
Obradović, Nina
Pavlović, Vera P.
Pavlović, Vladimir B.
Peleš, Adriana
Ristić, Momčilo M.
Article (Published version)
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Abstract
Ferroelectric barium strontium titanate (Ba0.77Sr0.23TiO3), BST, was prepared by solid-state reactions using as the starting compounds powder of barium carbonate (BaCO3), strontium carbonate (SrCO3) and titanium dioxide (TiO2–anatase). Non-activated mixtures and mixtures mechanically activated in a high-energy planetary ball mill (0, 5, 10, 20, 40, 80 and 120 min) were sintered at 1100, 1200, 1300 and 1400 °C for 2 h in air atmosphere. Defects and the effect of the beginning of the sintering process on the microstructure were investigated by scanning electron microscopy (SEM). Electrical measurements (loss tangent and resistivity as the function of frequency XC=f(log ν)) were performed for ceramics sintered at 1400 °C for 2 h. It has been found that mechanical activation can reduce the sintering temperature by around 100 °C, which leads to significant energy savings. Furthermore, activated for 80 min and sintered at 1400 °C for 2 h exhibit the largest density values and have about 36% ...lower dielectric loss at a frequency of 1 kHz and about 57% at a frequency of 10 kHz than the samples obtained from the initial non-activated powder sintered under the same conditions.

Keywords:
sintering / mechanical activation / milling / electrical properties
Source:
Ceramics International, 2014, 8, Part A, 11883-11888
Publisher:
  • Elsevier
Projects:
  • Directed synthesis, structure and properties of multifunctional materials (RS-172057)
  • Serbian Academy of Sciences and Arts, Project F-198

DOI: 10.1016/j.ceramint.2014.04.023

ISSN: 0272-8842

WoS: 000340328600051

Scopus: 2-s2.0-84903899502
[ Google Scholar ]
5
5
URI
http://dais.sanu.ac.rs/123456789/544
Collections
  • Општа колекција САНУ / General collection of SASA
  • ITN SANU - Opšta kolekcija / ITS SASA - General collection
Institution
Институт техничких наука САНУ / Institute of Technical Sciences of SASA
TY  - JOUR
AU  - Kosanović, Darko
AU  - Živojinović, Jelena
AU  - Obradović, Nina
AU  - Pavlović, Vera P.
AU  - Pavlović, Vladimir B.
AU  - Peleš, Adriana
AU  - Ristić, Momčilo M.
PY  - 2014
UR  - http://dais.sanu.ac.rs/123456789/544
AB  - Ferroelectric barium strontium titanate (Ba0.77Sr0.23TiO3), BST, was prepared by solid-state reactions using as the starting compounds powder of barium carbonate (BaCO3), strontium carbonate (SrCO3) and titanium dioxide (TiO2–anatase). Non-activated mixtures and mixtures mechanically activated in a high-energy planetary ball mill (0, 5, 10, 20, 40, 80 and 120 min) were sintered at 1100, 1200, 1300 and 1400 °C for 2 h in air atmosphere. Defects and the effect of the beginning of the sintering process on the microstructure were investigated by scanning electron microscopy (SEM). Electrical measurements (loss tangent and resistivity as the function of frequency XC=f(log ν)) were performed for ceramics sintered at 1400 °C for 2 h. It has been found that mechanical activation can reduce the sintering temperature by around 100 °C, which leads to significant energy savings. Furthermore, activated for 80 min and sintered at 1400 °C for 2 h exhibit the largest density values and have about 36% lower dielectric loss at a frequency of 1 kHz and about 57% at a frequency of 10 kHz than the samples obtained from the initial non-activated powder sintered under the same conditions.
PB  - Elsevier
T2  - Ceramics International
T1  - The influence of mechanical activation on the electrical properties of Ba0.77Sr0.23TiO3 ceramics
SP  - 11883
EP  - 11888
IS  - 8, Part A
DO  - 10.1016/j.ceramint.2014.04.023
ER  - 
@article{
author = "Kosanović, Darko and Živojinović, Jelena and Obradović, Nina and Pavlović, Vera P. and Pavlović, Vladimir B. and Peleš, Adriana and Ristić, Momčilo M.",
year = "2014",
url = "http://dais.sanu.ac.rs/123456789/544",
abstract = "Ferroelectric barium strontium titanate (Ba0.77Sr0.23TiO3), BST, was prepared by solid-state reactions using as the starting compounds powder of barium carbonate (BaCO3), strontium carbonate (SrCO3) and titanium dioxide (TiO2–anatase). Non-activated mixtures and mixtures mechanically activated in a high-energy planetary ball mill (0, 5, 10, 20, 40, 80 and 120 min) were sintered at 1100, 1200, 1300 and 1400 °C for 2 h in air atmosphere. Defects and the effect of the beginning of the sintering process on the microstructure were investigated by scanning electron microscopy (SEM). Electrical measurements (loss tangent and resistivity as the function of frequency XC=f(log ν)) were performed for ceramics sintered at 1400 °C for 2 h. It has been found that mechanical activation can reduce the sintering temperature by around 100 °C, which leads to significant energy savings. Furthermore, activated for 80 min and sintered at 1400 °C for 2 h exhibit the largest density values and have about 36% lower dielectric loss at a frequency of 1 kHz and about 57% at a frequency of 10 kHz than the samples obtained from the initial non-activated powder sintered under the same conditions.",
publisher = "Elsevier",
journal = "Ceramics International",
title = "The influence of mechanical activation on the electrical properties of Ba0.77Sr0.23TiO3 ceramics",
pages = "11883-11888",
number = "8, Part A",
doi = "10.1016/j.ceramint.2014.04.023"
}
Kosanović D, Živojinović J, Obradović N, Pavlović VP, Pavlović VB, Peleš A, Ristić MM. The influence of mechanical activation on the electrical properties of Ba0.77Sr0.23TiO3 ceramics. Ceramics International. 2014;(8, Part A):11883-11888
Kosanović, D., Živojinović, J., Obradović, N., Pavlović, V. P., Pavlović, V. B., Peleš, A.,& Ristić, M. M. (2014). The influence of mechanical activation on the electrical properties of Ba0.77Sr0.23TiO3 ceramics.
Ceramics InternationalElsevier., null(8, Part A), 11883-11888. 
https://doi.org/10.1016/j.ceramint.2014.04.023
Kosanović Darko, Živojinović Jelena, Obradović Nina, Pavlović Vera P., Pavlović Vladimir B., Peleš Adriana, Ristić Momčilo M., "The influence of mechanical activation on the electrical properties of Ba0.77Sr0.23TiO3 ceramics" null, no. 8, Part A (2014):11883-11888,
https://doi.org/10.1016/j.ceramint.2014.04.023 .

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