The influence of mechanical activation on microstructure and dielectric properties of SrTiO3 ceramics
Authors
Živojinović, Jelena
Blagojević, Vladimir A.

Pavlović, Vera P.

Kosanović, Darko

Tadić, Nenad B.

Pavlović, Vladimir B.

Conference object (Published version)
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In recent years, a lot of interest has been shown in obtaining materials with predetermined properties. The aim is to establish a functional dependence between the synthesis parameters, structural characteristics, and properties of the material. Ceramic materials based on strontium titanate (SrTiO3) are of special interest due to their unique physical-chemical properties. Having in mind the importance of examining the influence of synthesis parameters on the process of obtaining and properties of functional electroceramic materials, and the importance of SrTiO3 as a perovskite material, the motive was to analyze and consider the influence of mechanical activation. It has been established that the time of mechanical activation (0, 10, 30, 60, 90, and 120 minutes) of SrTiO3 powders indirectly affects on electrical properties of SrTiO3 ceramics. It was noticed that in SrTiO3 ceramics the values of relative dielectric permittivity in the radio frequency range (0,3 MHz-3 GHz) are stable, wh...ich is important for the fabrication of electronic components. Microstructural SEM analysis showed that the increase in mechanical activation time results in less porous samples. It was found that the value of the relative dielectric permittivity of ceramic samples at room temperature changes following the combined effect of changes in sample density, grain size, as well as changes in the grain boundary region. The maximum value of dielectric permittivity was observed in the sample activated for 10 minutes. Also, the sample activated for 10 min exhibits relatively low values of loss tangent, compared to the other mechanically activated samples, providing the best overall dielectric performance compared to other samples.
Keywords:
strontium titanate / mechanical activation / sintering / electrical propertiesSource:
Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia, 2021, 80-80Publisher:
- Belgrade : Innovation Center of Faculty of Mechanical Engineering
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Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - CONF AU - Živojinović, Jelena AU - Blagojević, Vladimir A. AU - Pavlović, Vera P. AU - Kosanović, Darko AU - Tadić, Nenad B. AU - Pavlović, Vladimir B. PY - 2021 UR - https://dais.sanu.ac.rs/123456789/12349 AB - In recent years, a lot of interest has been shown in obtaining materials with predetermined properties. The aim is to establish a functional dependence between the synthesis parameters, structural characteristics, and properties of the material. Ceramic materials based on strontium titanate (SrTiO3) are of special interest due to their unique physical-chemical properties. Having in mind the importance of examining the influence of synthesis parameters on the process of obtaining and properties of functional electroceramic materials, and the importance of SrTiO3 as a perovskite material, the motive was to analyze and consider the influence of mechanical activation. It has been established that the time of mechanical activation (0, 10, 30, 60, 90, and 120 minutes) of SrTiO3 powders indirectly affects on electrical properties of SrTiO3 ceramics. It was noticed that in SrTiO3 ceramics the values of relative dielectric permittivity in the radio frequency range (0,3 MHz-3 GHz) are stable, which is important for the fabrication of electronic components. Microstructural SEM analysis showed that the increase in mechanical activation time results in less porous samples. It was found that the value of the relative dielectric permittivity of ceramic samples at room temperature changes following the combined effect of changes in sample density, grain size, as well as changes in the grain boundary region. The maximum value of dielectric permittivity was observed in the sample activated for 10 minutes. Also, the sample activated for 10 min exhibits relatively low values of loss tangent, compared to the other mechanically activated samples, providing the best overall dielectric performance compared to other samples. PB - Belgrade : Innovation Center of Faculty of Mechanical Engineering C3 - Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia T1 - The influence of mechanical activation on microstructure and dielectric properties of SrTiO3 ceramics SP - 80 EP - 80 UR - https://hdl.handle.net/21.15107/rcub_dais_12349 ER -
@conference{ author = "Živojinović, Jelena and Blagojević, Vladimir A. and Pavlović, Vera P. and Kosanović, Darko and Tadić, Nenad B. and Pavlović, Vladimir B.", year = "2021", abstract = "In recent years, a lot of interest has been shown in obtaining materials with predetermined properties. The aim is to establish a functional dependence between the synthesis parameters, structural characteristics, and properties of the material. Ceramic materials based on strontium titanate (SrTiO3) are of special interest due to their unique physical-chemical properties. Having in mind the importance of examining the influence of synthesis parameters on the process of obtaining and properties of functional electroceramic materials, and the importance of SrTiO3 as a perovskite material, the motive was to analyze and consider the influence of mechanical activation. It has been established that the time of mechanical activation (0, 10, 30, 60, 90, and 120 minutes) of SrTiO3 powders indirectly affects on electrical properties of SrTiO3 ceramics. It was noticed that in SrTiO3 ceramics the values of relative dielectric permittivity in the radio frequency range (0,3 MHz-3 GHz) are stable, which is important for the fabrication of electronic components. Microstructural SEM analysis showed that the increase in mechanical activation time results in less porous samples. It was found that the value of the relative dielectric permittivity of ceramic samples at room temperature changes following the combined effect of changes in sample density, grain size, as well as changes in the grain boundary region. The maximum value of dielectric permittivity was observed in the sample activated for 10 minutes. Also, the sample activated for 10 min exhibits relatively low values of loss tangent, compared to the other mechanically activated samples, providing the best overall dielectric performance compared to other samples.", publisher = "Belgrade : Innovation Center of Faculty of Mechanical Engineering", journal = "Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia", title = "The influence of mechanical activation on microstructure and dielectric properties of SrTiO3 ceramics", pages = "80-80", url = "https://hdl.handle.net/21.15107/rcub_dais_12349" }
Živojinović, J., Blagojević, V. A., Pavlović, V. P., Kosanović, D., Tadić, N. B.,& Pavlović, V. B.. (2021). The influence of mechanical activation on microstructure and dielectric properties of SrTiO3 ceramics. in Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia Belgrade : Innovation Center of Faculty of Mechanical Engineering., 80-80. https://hdl.handle.net/21.15107/rcub_dais_12349
Živojinović J, Blagojević VA, Pavlović VP, Kosanović D, Tadić NB, Pavlović VB. The influence of mechanical activation on microstructure and dielectric properties of SrTiO3 ceramics. in Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia. 2021;:80-80. https://hdl.handle.net/21.15107/rcub_dais_12349 .
Živojinović, Jelena, Blagojević, Vladimir A., Pavlović, Vera P., Kosanović, Darko, Tadić, Nenad B., Pavlović, Vladimir B., "The influence of mechanical activation on microstructure and dielectric properties of SrTiO3 ceramics" in Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia (2021):80-80, https://hdl.handle.net/21.15107/rcub_dais_12349 .