Europium luminescence in Eu1−Bi V1−As O4 materials of tetragonal form
| Autor: | M. Lemaitre-Blaise, Pierre Porcher, F. Wallart, Elisabeth Antic-Fidancev, A. Lorriaux-Rubbens |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Photoluminescence
Mechanical Engineering Inorganic chemistry Metals and Alloys chemistry.chemical_element Bismuth Crystal symbols.namesake Tetragonal crystal system chemistry Mechanics of Materials Phenomenological model Materials Chemistry symbols Physical chemistry Europium Luminescence Raman scattering |
| Zdroj: | Journal of Alloys and Compounds. :412-415 |
| ISSN: | 0925-8388 |
| DOI: | 10.1016/s0925-8388(98)00358-2 |
| Popis: | An enhancement of the intensity of Eu 3+ luminescence is observed when arsenic replaces vanadium in bismuth europium orthovanadates. This is connected to the progressive crystallographic modification induced by the cation substitution in the studied compounds. The optical spectroscopies of luminescence and Raman scattering bring out further information and improve X-ray diffraction results [1]. For the most efficient substitution, corresponding to the Eu 0.10 Bi 0.90 V 0.60 As 0.40 O 4 chemical formula, the energy level scheme is derived from the emission spectrum recorded at 77 K. A determination of the phenomenological crystal field parameters in a C 2v symmetry is performed with a good r.m.s. deviation of 4.3 cm -1 . |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect