Structures and solid solution mechanisms of pyrochlore phases in the systems Bi2O3-ZnO-(Nb, Ta)2O5
The crystal structures of two pyrochlore phases have been determined by Rietveld refinement of combined X-ray and neutron powder diffraction data. These are stoichiometric, Bi1.5 ZnTa1.5O7 and non-stoichiometric Bi1.56Zn0.92Nb1.44O6.86. In both structures, Zn is distributed over A- and B-sites; Bi a...
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| Format: | Article |
| Language: | English English |
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Elsevier
2010
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| Online Access: | http://psasir.upm.edu.my/id/eprint/16873/1/Structures%20and%20solid%20solution%20mechanisms%20of%20pyrochlore%20phases%20in%20the%20systems%20Bi2O3.pdf |
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| author | Tan, Kar Ban Khaw, Chwin Chieh Lee, Chnoong Kheng Zainal, Zulkarnain Miles, Gabrielle |
| author_facet | Tan, Kar Ban Khaw, Chwin Chieh Lee, Chnoong Kheng Zainal, Zulkarnain Miles, Gabrielle |
| author_sort | Tan, Kar Ban |
| collection | UPM |
| description | The crystal structures of two pyrochlore phases have been determined by Rietveld refinement of combined X-ray and neutron powder diffraction data. These are stoichiometric, Bi1.5 ZnTa1.5O7 and non-stoichiometric Bi1.56Zn0.92Nb1.44O6.86. In both structures, Zn is distributed over A- and B-sites; Bi and Zn are displaced off-centre, to different 96g A-site positions; of the three sets of oxygen positions, O(1) are full, O(2) contain vacancies and O(3) contain a small number of oxygen, again in both cases. Comparisons between these structures, those of related Sb analogues and literature reports are made. |
| first_indexed | 2024-03-06T07:38:42Z |
| format | Article |
| id | upm.eprints-16873 |
| institution | Universiti Putra Malaysia |
| language | English English |
| last_indexed | 2024-03-06T07:38:42Z |
| publishDate | 2010 |
| publisher | Elsevier |
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| spelling | upm.eprints-168732016-01-19T02:55:31Z http://psasir.upm.edu.my/id/eprint/16873/ Structures and solid solution mechanisms of pyrochlore phases in the systems Bi2O3-ZnO-(Nb, Ta)2O5 Tan, Kar Ban Khaw, Chwin Chieh Lee, Chnoong Kheng Zainal, Zulkarnain Miles, Gabrielle The crystal structures of two pyrochlore phases have been determined by Rietveld refinement of combined X-ray and neutron powder diffraction data. These are stoichiometric, Bi1.5 ZnTa1.5O7 and non-stoichiometric Bi1.56Zn0.92Nb1.44O6.86. In both structures, Zn is distributed over A- and B-sites; Bi and Zn are displaced off-centre, to different 96g A-site positions; of the three sets of oxygen positions, O(1) are full, O(2) contain vacancies and O(3) contain a small number of oxygen, again in both cases. Comparisons between these structures, those of related Sb analogues and literature reports are made. Elsevier 2010 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/16873/1/Structures%20and%20solid%20solution%20mechanisms%20of%20pyrochlore%20phases%20in%20the%20systems%20Bi2O3.pdf Tan, Kar Ban and Khaw, Chwin Chieh and Lee, Chnoong Kheng and Zainal, Zulkarnain and Miles, Gabrielle (2010) Structures and solid solution mechanisms of pyrochlore phases in the systems Bi2O3-ZnO-(Nb, Ta)2O5. Journal of Alloys and Compounds, 508 (2). pp. 457-462. ISSN 0925-8388 Solid state chemistry Ceramics Pyrochlore 10.1016/j.jallcom.2010.08.093 English |
| spellingShingle | Solid state chemistry Ceramics Pyrochlore Tan, Kar Ban Khaw, Chwin Chieh Lee, Chnoong Kheng Zainal, Zulkarnain Miles, Gabrielle Structures and solid solution mechanisms of pyrochlore phases in the systems Bi2O3-ZnO-(Nb, Ta)2O5 |
| title | Structures and solid solution mechanisms of pyrochlore phases in the systems Bi2O3-ZnO-(Nb, Ta)2O5 |
| title_full | Structures and solid solution mechanisms of pyrochlore phases in the systems Bi2O3-ZnO-(Nb, Ta)2O5 |
| title_fullStr | Structures and solid solution mechanisms of pyrochlore phases in the systems Bi2O3-ZnO-(Nb, Ta)2O5 |
| title_full_unstemmed | Structures and solid solution mechanisms of pyrochlore phases in the systems Bi2O3-ZnO-(Nb, Ta)2O5 |
| title_short | Structures and solid solution mechanisms of pyrochlore phases in the systems Bi2O3-ZnO-(Nb, Ta)2O5 |
| title_sort | structures and solid solution mechanisms of pyrochlore phases in the systems bi2o3 zno nb ta 2o5 |
| topic | Solid state chemistry Ceramics Pyrochlore |
| url | http://psasir.upm.edu.my/id/eprint/16873/1/Structures%20and%20solid%20solution%20mechanisms%20of%20pyrochlore%20phases%20in%20the%20systems%20Bi2O3.pdf |
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