Structure and dielectric properties of (1-x)Bi0.5Na0.5TiO3-xBaTiO3 piezoceramics prepared using hydrothermally synthesized powders
© 2021 The Authors..
The influence of different processing parameters and various Ba2+ addition (up to 10 mol%) on the structure and dielectric properties of Bi0.5Na0.5TiO3-BaTiO3 (BNT-BT) ceramics was investigated. The powders were hydrothermally synthesized in the alkaline environment at 180°C for different time periods. X-ray diffraction confirmed the presence of dominant rhombohedral Bi0.5Na0.5TiO3 phase and a small amount of secondary pyrochlore Bi2Ti2O7 phase in the pure BNT powders. In addition, one-dimensional Na2Ti2O7 structure was also observed in the powder hydrothermally treated for a long time (i.e. 48 h). The amount of secondary pyrochlore phase in the BNT-BT powders increases with the increase of Ba2+ content. The synthesized powders were pressed into pellets and finally sintered at various temperatures up to 1150°C. High density (more than 90%TD) was obtained in all BNT-BT sintered samples. Optimal sintering parameters were chosen in order to obtain dense ceramics with the optimal phase composition. The temperature dependence of dielectric properties for the BNT-BT ceramics was also studied. Relaxor behaviour of BNT-based ceramics and broad transition peaks are evident in all samples. Dielectric constant up to 400 as well as an acceptable low dielectric loss at temperatures lower than 200°C were obtained in BNT-BT ceramics.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2021 |
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| Erschienen: |
2021 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:8 |
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| Enthalten in: |
Royal Society open science - 8(2021), 7 vom: 04. Juli, Seite 202365 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Nesterović, Andrea [VerfasserIn] |
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| Links: |
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| Themen: |
BNT-BT |
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| Anmerkungen: |
Date Revised 07.04.2024 published: Electronic-eCollection Dryad: 10.5061/dryad.kh189324r Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1098/rsos.202365 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM328943908 |
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| 100 | 1 | |a Nesterović, Andrea |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Structure and dielectric properties of (1-x)Bi0.5Na0.5TiO3-xBaTiO3 piezoceramics prepared using hydrothermally synthesized powders |
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| 500 | |a published: Electronic-eCollection | ||
| 500 | |a Dryad: 10.5061/dryad.kh189324r | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a © 2021 The Authors. | ||
| 520 | |a The influence of different processing parameters and various Ba2+ addition (up to 10 mol%) on the structure and dielectric properties of Bi0.5Na0.5TiO3-BaTiO3 (BNT-BT) ceramics was investigated. The powders were hydrothermally synthesized in the alkaline environment at 180°C for different time periods. X-ray diffraction confirmed the presence of dominant rhombohedral Bi0.5Na0.5TiO3 phase and a small amount of secondary pyrochlore Bi2Ti2O7 phase in the pure BNT powders. In addition, one-dimensional Na2Ti2O7 structure was also observed in the powder hydrothermally treated for a long time (i.e. 48 h). The amount of secondary pyrochlore phase in the BNT-BT powders increases with the increase of Ba2+ content. The synthesized powders were pressed into pellets and finally sintered at various temperatures up to 1150°C. High density (more than 90%TD) was obtained in all BNT-BT sintered samples. Optimal sintering parameters were chosen in order to obtain dense ceramics with the optimal phase composition. The temperature dependence of dielectric properties for the BNT-BT ceramics was also studied. Relaxor behaviour of BNT-based ceramics and broad transition peaks are evident in all samples. Dielectric constant up to 400 as well as an acceptable low dielectric loss at temperatures lower than 200°C were obtained in BNT-BT ceramics | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a BNT-BT | |
| 650 | 4 | |a dielectric properties | |
| 650 | 4 | |a hydrothermal synthesis | |
| 650 | 4 | |a perovskite | |
| 650 | 4 | |a sintering | |
| 700 | 1 | |a Vukmirović, Jelena |e verfasserin |4 aut | |
| 700 | 1 | |a Stijepović, Ivan |e verfasserin |4 aut | |
| 700 | 1 | |a Milanović, Marija |e verfasserin |4 aut | |
| 700 | 1 | |a Bajac, Branimir |e verfasserin |4 aut | |
| 700 | 1 | |a Tóth, Elvira |e verfasserin |4 aut | |
| 700 | 1 | |a Cvejić, Željka |e verfasserin |4 aut | |
| 700 | 1 | |a Srdić, Vladimir V |e verfasserin |4 aut | |
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