Mn(V) polyhedron size in Ba10((P,Mn)O4)6F2: vibrational spectroscopy and EXAFS study
| Autor: | G. Chottard, François Ribot, D. Huguenin, K. Dardenne, Daniel Vivien |
|---|---|
| Přispěvatelé: | Laboratoire de Chimie Appliquée de l'État Solide (LCAES), Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Matériaux Hybrides et Nanomatériaux (LCMCP-MHN), Laboratoire de Chimie de la Matière Condensée de Paris (LCMCP), Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Novel Advanced Nano-Objects (LCMCP-NANO), Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Laboratoire de Chimie de la Matière Condensée de Paris (LCMCP), Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Chimie Inorganique et Matériaux Moléculaires (CIM2), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 1998 |
| Předmět: |
Extended X-ray absorption fine structure
Analytical chemistry Infrared spectroscopy chemistry.chemical_element Barium [CHIM.MATE]Chemical Sciences/Material chemistry 02 engineering and technology General Chemistry Manganese Crystal structure [CHIM.INOR]Chemical Sciences/Inorganic chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Inorganic Chemistry symbols.namesake Crystallography chemistry K-edge symbols 0210 nano-technology Raman spectroscopy ComputingMilieux_MISCELLANEOUS Solid solution |
| Zdroj: | European Journal of Solid State and Inorganic Chemistry European Journal of Solid State and Inorganic Chemistry, 1998, 35 (6-7), pp.419-431. ⟨10.1016/S0992-4361(98)80020-9⟩ European Journal of Solid State and Inorganic Chemistry, Elsevier, 1998, 35 (6-7), pp.419-431. ⟨10.1016/S0992-4361(98)80020-9⟩ |
| ISSN: | 0992-4361 |
| Popis: | This paper reports the study of manganese substituted barium fluoroapatite Ba10(P1−xMnxO4)6F2 with 0 ≤ × ≤ 0.20. X-rays diffraction investigation indicates that the phosphate-manganate solid solution is complete, at least for this composition range, and follows Vegard's law, while diffuse reflectance and fluorescence spectra confirm that Mn(V) substitutes for P(V) in the barium apatite lattice. EXAFS experiment, at the manganese K edge, performed on the x = 0.2 compound, indicates that the Mn(V)-O distance is 1.73 A, a much larger value than the P-O distance equal to 1.54 A. The (MnO4)3− vibrational mode frequencies, deduced from the IR and Raman spectra are almost independent of the x value. This indicates that, even at very low manganese content (x = 0.001), the Mn-O distance is also very close to 1.73 A. The Mn(V) ion distorts the barium apatite lattice to a large extent when it substitutes for P(V) and imposes its own size to the host sites. |
| Databáze: | OpenAIRE |
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