Raman study of Ba-doped ceria nanopowders
A series of Ce1-xBaxO2-y (5£x£0.20) nanometric powders were synthesized by selfpropagating room temperature synthesis. XRD and Raman scattering measurements were used to characterize the samples at room temperature. All the samples are solid solutions with fluorite type structure with an average cry...
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| Format: | Article |
| Language: | English |
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International Institute for the Science of Sintering, Beograd
2007-01-01
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| Series: | Science of Sintering |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/0350-820X/2007/0350-820X0703281R.pdf |
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| author | Radović M. Dohčević-Mitrović Z. Šćepanović M. Grujić-Brojčin M. Matović B. Bošković S. Popović Z.V. |
| author_facet | Radović M. Dohčević-Mitrović Z. Šćepanović M. Grujić-Brojčin M. Matović B. Bošković S. Popović Z.V. |
| author_sort | Radović M. |
| collection | DOAJ |
| description | A series of Ce1-xBaxO2-y (5£x£0.20) nanometric powders were synthesized by selfpropagating room temperature synthesis. XRD and Raman scattering measurements were used to characterize the samples at room temperature. All the samples are solid solutions with fluorite type structure with an average crystallite size about 5 nm. The redshift and asymmetric broadening of the Raman F2g mode can be well explained with combined confinement and strain effects because of the nanocrystalline powders nature. The appearance of the additional peaks at ~ 560 cm-1 and ~ 600 cm-1, are attributed to extrinsic and intrinsic O2- vacancies in ceria lattice. Raman spectra of temperature treated Ce0.80Ba0.20O2-d sample revealed the instability of this system. |
| first_indexed | 2024-04-12T16:17:57Z |
| format | Article |
| id | doaj.art-20df5b49cd334d5c8f10556e51f2a471 |
| institution | Directory Open Access Journal |
| issn | 0350-820X |
| language | English |
| last_indexed | 2024-04-12T16:17:57Z |
| publishDate | 2007-01-01 |
| publisher | International Institute for the Science of Sintering, Beograd |
| record_format | Article |
| series | Science of Sintering |
| spelling | doaj.art-20df5b49cd334d5c8f10556e51f2a4712022-12-22T03:25:39ZengInternational Institute for the Science of Sintering, BeogradScience of Sintering0350-820X2007-01-0139328128610.2298/SOS0703281RRaman study of Ba-doped ceria nanopowdersRadović M.Dohčević-Mitrović Z.Šćepanović M.Grujić-Brojčin M.Matović B.Bošković S.Popović Z.V.A series of Ce1-xBaxO2-y (5£x£0.20) nanometric powders were synthesized by selfpropagating room temperature synthesis. XRD and Raman scattering measurements were used to characterize the samples at room temperature. All the samples are solid solutions with fluorite type structure with an average crystallite size about 5 nm. The redshift and asymmetric broadening of the Raman F2g mode can be well explained with combined confinement and strain effects because of the nanocrystalline powders nature. The appearance of the additional peaks at ~ 560 cm-1 and ~ 600 cm-1, are attributed to extrinsic and intrinsic O2- vacancies in ceria lattice. Raman spectra of temperature treated Ce0.80Ba0.20O2-d sample revealed the instability of this system.http://www.doiserbia.nb.rs/img/doi/0350-820X/2007/0350-820X0703281R.pdfBa doped ceria nanopowdersXRD methodRaman scatteringphase separation |
| spellingShingle | Radović M. Dohčević-Mitrović Z. Šćepanović M. Grujić-Brojčin M. Matović B. Bošković S. Popović Z.V. Raman study of Ba-doped ceria nanopowders Science of Sintering Ba doped ceria nanopowders XRD method Raman scattering phase separation |
| title | Raman study of Ba-doped ceria nanopowders |
| title_full | Raman study of Ba-doped ceria nanopowders |
| title_fullStr | Raman study of Ba-doped ceria nanopowders |
| title_full_unstemmed | Raman study of Ba-doped ceria nanopowders |
| title_short | Raman study of Ba-doped ceria nanopowders |
| title_sort | raman study of ba doped ceria nanopowders |
| topic | Ba doped ceria nanopowders XRD method Raman scattering phase separation |
| url | http://www.doiserbia.nb.rs/img/doi/0350-820X/2007/0350-820X0703281R.pdf |
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