NEW DEFECT PYROCHLORE SOLID SOLUTION IN THE KBi2M5O16 – TlBi2M5O16 (M=Nb, Ta) SYSTEMS
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| 1. | Title | Title of document | NEW DEFECT PYROCHLORE SOLID SOLUTION IN THE KBi2M5O16 – TlBi2M5O16 (M=Nb, Ta) SYSTEMS |
| 2. | Creator | Author's name, affiliation, country | A. Chagraoui; Laboratoire de Chimie Analytique et Physico-chimie des Matériaux, Faculté des Sciences Ben M’Sik Casablanca, Université Hassan II-Mohammedia; Morocco |
| 2. | Creator | Author's name, affiliation, country | O. Ait Sidi Ahmed; Laboratoire de Chimie Analytique et Physico-chimie des Matériaux, Faculté des Sciences Ben M’Sik Casablanca, Université Hassan II-Mohammedia; Morocco |
| 2. | Creator | Author's name, affiliation, country | A. Tairi; Laboratoire de Chimie Analytique et Physico-chimie des Matériaux, Faculté des Sciences Ben M’Sik Casablanca, Université Hassan II-Mohammedia; Morocco |
| 3. | Subject | Discipline(s) | |
| 3. | Subject | Keyword(s) | |
| 4. | Description | Abstract | Synthesis and caraterization of new solids solutions K1-xTlxBi2M5O16 with (0≤x≤1; M=Nb, Ta) defect pyrochlore type. Two solid solutions K1-xTlxBi2M5O16 (0≤x≤1; M=Nb, Ta) were prepared using solid state reaction method and characterized by x-ray diffraction and Infrared absorption spectroscopy. All compositions were indexed in the cubic system (space group Fd3m) and showed the defect pyrochlore-type structure like oxides as ABi2M5O16 (A=K, Tl; M=Nb, Ta) [1]. The cell parameter of the two defect pyrochlores solid solutions varies linearly with increasing x of compositions from a=10.5701(1) Å to a=10.5343(1) Å for K1-xTlxBi2Nb5O16 (0≤x≤1) and from a=10.5489(1) Å to a=10.5144(1) Å for K1-xTlxBi2Ta5O16 (0≤x≤1). Résumé – Synthèse et caractérisation de nouvelles solutions solides K1-xTlxBi2M5O16 (0≤x≤1; M=Nb, Ta) de type pyrochlore déficitaire. Deux solutions solides K1-xTlxBi2M5O16 (0≤x≤1; M=Nb, Ta) ont été préparées à l’état solide et caractérisées par diffraction des rayons X et par spectroscopie d’absorption infrarouge. Toutes les compositions des solutions solides cristallisent dans le système cubique (groupe d’espace Fd3m) et appartiennent à la famille des pyrochlores déficitaires, ABi2M5O16 (A=K, Tl; M=Nb, Ta) [1]. Le paramètre de maille des deux solutions solides varie linéairement avec la composition x de a=10.5701(1) Å à a=10.5343(1) Å pour K1-xTlxBi2Nb5O16 (0≤x≤1) et de a=10.5489(1) Å à a=10.5144(1) Å pour K1-xTlxBi2Ta5O16 (0≤x≤1). |
| 5. | Publisher | Organizing agency, location | |
| 6. | Contributor | Sponsor(s) | |
| 7. | Date | (YYYY-MM-DD) | 21-03-2011 |
| 8. | Type | Status & genre | Peer-reviewed Article |
| 8. | Type | Type | |
| 9. | Format | File format | |
| 10. | Identifier | Uniform Resource Identifier | https://revues.imist.ma/index.php/MJCM/article/view/252 |
| 11. | Source | Title; vol., no. (year) | Moroccan Journal of Condensed Matter; Vol 12, No 2 (2010) |
| 12. | Language | English=en | en |
| 13. | Relation | Supp. Files | |
| 14. | Coverage | Geo-spatial location, chronological period, research sample (gender, age, etc.) | |
| 15. | Rights | Copyright and permissions |
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