Studies on δ-Bi<sub>2</sub>O<sub>3</sub> Based Nanocrystalline Glass-Ceramics Stabilized at Room Temperature by Novel Methods
This study demonstrated for the first time that it is possible to prepare nanocrystalline δ-Bi<sub>2</sub>O<sub>3</sub> that is stable at room temperature by twin-rollers and free cooling methods, using a ceramic crucible. The phase composition of prepared samples and upper l...
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| Format: | Article |
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MDPI AG
2022-08-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/15/7885 |
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| author | Paulina Kruk-Fura Jerzy E. Garbarczyk |
| author_facet | Paulina Kruk-Fura Jerzy E. Garbarczyk |
| author_sort | Paulina Kruk-Fura |
| collection | DOAJ |
| description | This study demonstrated for the first time that it is possible to prepare nanocrystalline δ-Bi<sub>2</sub>O<sub>3</sub> that is stable at room temperature by twin-rollers and free cooling methods, using a ceramic crucible. The phase composition of prepared samples and upper limit of the thermal stability of nanograins confined in an amorphous matrix were determined by the X-ray diffraction (XRD) method. The average size of crystallites and the microstructure of studied samples was determined by SEM and XRD methods. The average grain size varied from 38 to 85 nm, depending on the preparation technique; however, it was also observed that agglomerations consisted of smaller crystallites ca. 10–30 nm. Using the EDX method, it was found that a crucial role in the preparation of nanocrystalline δ-Bi<sub>2</sub>O<sub>3</sub> glass-ceramics was played by Si and Al impurities and their glass forming oxides from ceramic crucible. By impedance spectroscopy (IS), the temperature dependencies of electric conductivity (via oxygen ions) were studied and the activation energies of conductivity were determined. |
| first_indexed | 2024-03-09T05:34:50Z |
| format | Article |
| id | doaj.art-c8121d5467bb47eb96ab6e21dc041397 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T05:34:50Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-c8121d5467bb47eb96ab6e21dc0413972023-12-03T12:30:02ZengMDPI AGApplied Sciences2076-34172022-08-011215788510.3390/app12157885Studies on δ-Bi<sub>2</sub>O<sub>3</sub> Based Nanocrystalline Glass-Ceramics Stabilized at Room Temperature by Novel MethodsPaulina Kruk-Fura0Jerzy E. Garbarczyk1Faculty of Physics, Warsaw University of Technology, 00-661 Warsaw, PolandFaculty of Physics, Warsaw University of Technology, 00-661 Warsaw, PolandThis study demonstrated for the first time that it is possible to prepare nanocrystalline δ-Bi<sub>2</sub>O<sub>3</sub> that is stable at room temperature by twin-rollers and free cooling methods, using a ceramic crucible. The phase composition of prepared samples and upper limit of the thermal stability of nanograins confined in an amorphous matrix were determined by the X-ray diffraction (XRD) method. The average size of crystallites and the microstructure of studied samples was determined by SEM and XRD methods. The average grain size varied from 38 to 85 nm, depending on the preparation technique; however, it was also observed that agglomerations consisted of smaller crystallites ca. 10–30 nm. Using the EDX method, it was found that a crucial role in the preparation of nanocrystalline δ-Bi<sub>2</sub>O<sub>3</sub> glass-ceramics was played by Si and Al impurities and their glass forming oxides from ceramic crucible. By impedance spectroscopy (IS), the temperature dependencies of electric conductivity (via oxygen ions) were studied and the activation energies of conductivity were determined.https://www.mdpi.com/2076-3417/12/15/7885δ-Bi<sub>2</sub>O<sub>3</sub>glass-ceramicsfast cooling methodsnanocrystallizationoxygen ions conductivity |
| spellingShingle | Paulina Kruk-Fura Jerzy E. Garbarczyk Studies on δ-Bi<sub>2</sub>O<sub>3</sub> Based Nanocrystalline Glass-Ceramics Stabilized at Room Temperature by Novel Methods Applied Sciences δ-Bi<sub>2</sub>O<sub>3</sub> glass-ceramics fast cooling methods nanocrystallization oxygen ions conductivity |
| title | Studies on δ-Bi<sub>2</sub>O<sub>3</sub> Based Nanocrystalline Glass-Ceramics Stabilized at Room Temperature by Novel Methods |
| title_full | Studies on δ-Bi<sub>2</sub>O<sub>3</sub> Based Nanocrystalline Glass-Ceramics Stabilized at Room Temperature by Novel Methods |
| title_fullStr | Studies on δ-Bi<sub>2</sub>O<sub>3</sub> Based Nanocrystalline Glass-Ceramics Stabilized at Room Temperature by Novel Methods |
| title_full_unstemmed | Studies on δ-Bi<sub>2</sub>O<sub>3</sub> Based Nanocrystalline Glass-Ceramics Stabilized at Room Temperature by Novel Methods |
| title_short | Studies on δ-Bi<sub>2</sub>O<sub>3</sub> Based Nanocrystalline Glass-Ceramics Stabilized at Room Temperature by Novel Methods |
| title_sort | studies on δ bi sub 2 sub o sub 3 sub based nanocrystalline glass ceramics stabilized at room temperature by novel methods |
| topic | δ-Bi<sub>2</sub>O<sub>3</sub> glass-ceramics fast cooling methods nanocrystallization oxygen ions conductivity |
| url | https://www.mdpi.com/2076-3417/12/15/7885 |
| work_keys_str_mv | AT paulinakrukfura studiesondbisub2subosub3subbasednanocrystallineglassceramicsstabilizedatroomtemperaturebynovelmethods AT jerzyegarbarczyk studiesondbisub2subosub3subbasednanocrystallineglassceramicsstabilizedatroomtemperaturebynovelmethods |