| Autor: |
A. Housni, I. Mansouri, R. Olazcuaga, G. Le Flem, A. El Jazouli, Léopold Fournès |
| Rok vydání: |
1998 |
| Předmět: |
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| Zdroj: |
Annales de Chimie Science des Mat�riaux. 23:73-76 |
| ISSN: |
0151-9107 |
| DOI: |
10.1016/s0151-9107(98)80026-3 |
| Popis: |
The crystal structure of Ba0.5FeNb(PO4)3 has been refined from X-ray powder diffraction data by the Rietveld profilation method. Ba0.5FeNb(PO4)4 belong to the Nasicon - type structure with space group R—c. Ba3+ ions occupies statistically a half of the sites M(1) (6b).The Fe3+ and Nb5+ ions are distributed statistically in (A) sites (12c) Magnetic measurements have shown that Ba0.5FeNb(PO4)3 follows the Curie-weiss law and presents weak interactions between ferric ions. Mossbauer resonance confirms the ionic character of the Fe-O bonds. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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