Influence of calcium doping on microstructure, dielectric and electric properties of BaBi2Nb2O9 ceramics
Barium bismuth niobiate (BaBi2Nb2O9) ceramics modified by calcium were prepared by solid state synthesis and two-step sintering process. An impact of calcium substitution on the A site of perovskite block is presented. The investigations are focused on dielectric as well as electric aspects of the m...
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| Format: | Article |
| Language: | English |
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University of Novi Sad
2018-06-01
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| Series: | Processing and Application of Ceramics |
| Subjects: | |
| Online Access: | http://www.tf.uns.ac.rs/publikacije/PAC/pdf/PAC%2040%2011.pdf |
| _version_ | 1818511126310158336 |
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| author | Diana Szalbot Małgorzata Adamczyk Beata Wodecka-Duś Jolanta Dzik Michał Rerak Kamil Feliksik |
| author_facet | Diana Szalbot Małgorzata Adamczyk Beata Wodecka-Duś Jolanta Dzik Michał Rerak Kamil Feliksik |
| author_sort | Diana Szalbot |
| collection | DOAJ |
| description | Barium bismuth niobiate (BaBi2Nb2O9) ceramics modified by calcium were prepared by solid state synthesis and two-step sintering process. An impact of calcium substitution on the A site of perovskite block is presented. The investigations are focused on dielectric as well as electric aspects of the modification. The presented results reveal that the concentration of a space charge is not preserved, what is surprising due to the homovalent nature of the dopant and no reason for creating additional lattice defects and charges connected. However, not only the valence of ions, but also the calcium-oxygen and barium–oxygen bond strength should be taken into consideration. Since the calcium–oxygen bond is probably weaker the loss of the bismuth oxide is expected to increase with an increase in the calcium content. Such a scenario results in appearance of a large number of negative charge carriers connected with unsaturated oxygen ions. |
| first_indexed | 2024-12-10T23:29:14Z |
| format | Article |
| id | doaj.art-c0fcb1c170ba478e925830347a916753 |
| institution | Directory Open Access Journal |
| issn | 1820-6131 2406-1034 |
| language | English |
| last_indexed | 2024-12-10T23:29:14Z |
| publishDate | 2018-06-01 |
| publisher | University of Novi Sad |
| record_format | Article |
| series | Processing and Application of Ceramics |
| spelling | doaj.art-c0fcb1c170ba478e925830347a9167532022-12-22T01:29:28ZengUniversity of Novi SadProcessing and Application of Ceramics1820-61312406-10342018-06-0112217117910.2298/PAC1802171SInfluence of calcium doping on microstructure, dielectric and electric properties of BaBi2Nb2O9 ceramicsDiana Szalbot0Małgorzata Adamczyk1Beata Wodecka-Duś2Jolanta Dzik3Michał Rerak4Kamil Feliksik5Institute of Technology and Mechatronics, University of Silesia, 12, Zytnia St., 41-200 Sosnowiec, PolandInstitute of Technology and Mechatronics, University of Silesia, 12, Zytnia St., 41-200 Sosnowiec, PolandInstitute of Technology and Mechatronics, University of Silesia, 12, Zytnia St., 41-200 Sosnowiec, PolandInstitute of Technology and Mechatronics, University of Silesia, 12, Zytnia St., 41-200 Sosnowiec, PolandInstitute of Technology and Mechatronics, University of Silesia, 12, Zytnia St., 41-200 Sosnowiec, PolandInstitute of Technology and Mechatronics, University of Silesia, 12, Zytnia St., 41-200 Sosnowiec, PolandBarium bismuth niobiate (BaBi2Nb2O9) ceramics modified by calcium were prepared by solid state synthesis and two-step sintering process. An impact of calcium substitution on the A site of perovskite block is presented. The investigations are focused on dielectric as well as electric aspects of the modification. The presented results reveal that the concentration of a space charge is not preserved, what is surprising due to the homovalent nature of the dopant and no reason for creating additional lattice defects and charges connected. However, not only the valence of ions, but also the calcium-oxygen and barium–oxygen bond strength should be taken into consideration. Since the calcium–oxygen bond is probably weaker the loss of the bismuth oxide is expected to increase with an increase in the calcium content. Such a scenario results in appearance of a large number of negative charge carriers connected with unsaturated oxygen ions.http://www.tf.uns.ac.rs/publikacije/PAC/pdf/PAC%2040%2011.pdfrelaxor ferroelectriclead-free materialsAurivillius type materialsdielectric properties |
| spellingShingle | Diana Szalbot Małgorzata Adamczyk Beata Wodecka-Duś Jolanta Dzik Michał Rerak Kamil Feliksik Influence of calcium doping on microstructure, dielectric and electric properties of BaBi2Nb2O9 ceramics Processing and Application of Ceramics relaxor ferroelectric lead-free materials Aurivillius type materials dielectric properties |
| title | Influence of calcium doping on microstructure, dielectric and electric properties of BaBi2Nb2O9 ceramics |
| title_full | Influence of calcium doping on microstructure, dielectric and electric properties of BaBi2Nb2O9 ceramics |
| title_fullStr | Influence of calcium doping on microstructure, dielectric and electric properties of BaBi2Nb2O9 ceramics |
| title_full_unstemmed | Influence of calcium doping on microstructure, dielectric and electric properties of BaBi2Nb2O9 ceramics |
| title_short | Influence of calcium doping on microstructure, dielectric and electric properties of BaBi2Nb2O9 ceramics |
| title_sort | influence of calcium doping on microstructure dielectric and electric properties of babi2nb2o9 ceramics |
| topic | relaxor ferroelectric lead-free materials Aurivillius type materials dielectric properties |
| url | http://www.tf.uns.ac.rs/publikacije/PAC/pdf/PAC%2040%2011.pdf |
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