Effect of Na Content on the Physical Properties of Ba0.5Sr0.5TiO3 Powders
The different Na contents (0 ≤ Na ≤ 0.35, based on mole of NaOH) of doped Ba0.5Sr0.5TiO3 (BST) powders synthesized via sol-gel process were studied. The substitution of Na+ ions into a partial A-site of BST powders provided the reduction in vacancy defects as confirmed by electron paramagnetic reson...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2014/602504 |
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| author | Tassanee Tubchareon Soipatta Soisuwan Somchai Ratanathammaphan Piyasan Praserthdam |
| author_facet | Tassanee Tubchareon Soipatta Soisuwan Somchai Ratanathammaphan Piyasan Praserthdam |
| author_sort | Tassanee Tubchareon |
| collection | DOAJ |
| description | The different Na contents (0 ≤ Na ≤ 0.35, based on mole of NaOH) of doped Ba0.5Sr0.5TiO3 (BST) powders synthesized via sol-gel process were studied. The substitution of Na+ ions into a partial A-site of BST powders provided the reduction in vacancy defects as confirmed by electron paramagnetic resonance (EPR) and UV-visible spectroscopy. Photoluminescence (PL) spectra appeared in violet, blue, and green emissions. The phase structure, oxygen deficiency, and titanium deficiency of BST powders were further investigated as a function of Na content. X-ray diffraction (XRD) result was found that low Na content (0 ≤ Na ≤ 0.15) exhibited the tetragonal structure, while it was transformed to the cubic phase when high Na content. Moreover, X-ray photoelectron spectroscopy (XPS) result revealed that the partial oxidation of Ti3+ ions to Ti4+ ions was observed at Na content lower than 0.05 mole, while more addition of Na content resulted in the increasing of the oxygen and the titanium deficiency. Furthermore, the result indicated the oxygen deficiency significantly formed at the A-site of Sr atoms more than that of Ba atoms. |
| format | Article |
| id | doaj-art-ce606d6946fd4484b46d367db06a25a3 |
| institution | OA Journals |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-ce606d6946fd4484b46d367db06a25a32025-08-20T02:19:30ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422014-01-01201410.1155/2014/602504602504Effect of Na Content on the Physical Properties of Ba0.5Sr0.5TiO3 PowdersTassanee Tubchareon0Soipatta Soisuwan1Somchai Ratanathammaphan2Piyasan Praserthdam3Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, ThailandDepartment of Chemical Engineering, Faculty of Engineering, Burapha University, Chonburi 20131, ThailandDepartment of Electrical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, ThailandCenter of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, ThailandThe different Na contents (0 ≤ Na ≤ 0.35, based on mole of NaOH) of doped Ba0.5Sr0.5TiO3 (BST) powders synthesized via sol-gel process were studied. The substitution of Na+ ions into a partial A-site of BST powders provided the reduction in vacancy defects as confirmed by electron paramagnetic resonance (EPR) and UV-visible spectroscopy. Photoluminescence (PL) spectra appeared in violet, blue, and green emissions. The phase structure, oxygen deficiency, and titanium deficiency of BST powders were further investigated as a function of Na content. X-ray diffraction (XRD) result was found that low Na content (0 ≤ Na ≤ 0.15) exhibited the tetragonal structure, while it was transformed to the cubic phase when high Na content. Moreover, X-ray photoelectron spectroscopy (XPS) result revealed that the partial oxidation of Ti3+ ions to Ti4+ ions was observed at Na content lower than 0.05 mole, while more addition of Na content resulted in the increasing of the oxygen and the titanium deficiency. Furthermore, the result indicated the oxygen deficiency significantly formed at the A-site of Sr atoms more than that of Ba atoms.http://dx.doi.org/10.1155/2014/602504 |
| spellingShingle | Tassanee Tubchareon Soipatta Soisuwan Somchai Ratanathammaphan Piyasan Praserthdam Effect of Na Content on the Physical Properties of Ba0.5Sr0.5TiO3 Powders Advances in Materials Science and Engineering |
| title | Effect of Na Content on the Physical Properties of Ba0.5Sr0.5TiO3 Powders |
| title_full | Effect of Na Content on the Physical Properties of Ba0.5Sr0.5TiO3 Powders |
| title_fullStr | Effect of Na Content on the Physical Properties of Ba0.5Sr0.5TiO3 Powders |
| title_full_unstemmed | Effect of Na Content on the Physical Properties of Ba0.5Sr0.5TiO3 Powders |
| title_short | Effect of Na Content on the Physical Properties of Ba0.5Sr0.5TiO3 Powders |
| title_sort | effect of na content on the physical properties of ba0 5sr0 5tio3 powders |
| url | http://dx.doi.org/10.1155/2014/602504 |
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