Report
Variable properties of solid solutions of cerium-samarium tungstates Ce(2-x)Smx (WO4)3 (x≤0.3)
| العنوان: | Variable properties of solid solutions of cerium-samarium tungstates Ce(2-x)Smx (WO4)3 (x≤0.3) |
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| المؤلفون: | Derraji, K., Villain, Sylvie, Favotto, C., Gavarri, Jean-Raymond, Valmalette, J-C, Lyoussi, A., Nolibe, G., Guinneton, F. |
| المساهمون: | Institut des Matériaux, de Microélectronique et des Nanosciences de Provence (IM2NP), Aix Marseille Université (AMU)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Université de Toulon - UFR Sciences et Techniques (UTLN UFR ScT), Université de Toulon (UTLN), Département d'Etudes des Combustibles (DEC), Institut de recherche sur les systèmes nucléaires pour la production d'énergie bas carbone (CEA - DES) (IRESNE), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Conseil Régional PACA |
| المصدر: | https://univ-tln.hal.science/hal-02265574 ; 2019. |
| بيانات النشر: | HAL CCSD |
| سنة النشر: | 2019 |
| المجموعة: | Université de Toulon: HAL |
| مصطلحات موضوعية: | samarium cerium tungstates, chemical substitution, structural distortions, photoluminescence, [CHIM.MATE]Chemical Sciences/Material chemistry, [CHIM.CRIS]Chemical Sciences/Cristallography, [CHIM.INOR]Chemical Sciences/Inorganic chemistry, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] |
| الوصف: | Working document ; A solid solution Ce(2-x)Sm x(WO4)3 with x≤0.3 was synthesized via a coprecipitation route followed by thermal treatment at 1000 °C. The polycrystalline compounds were characterized by X-ray diffraction, scanning electron microscopy and photoluminescence experiments. Using Rietveld procedure, the decrease of cell parameters showed that a solid solution was obtained. A comparative analysis of diffraction profiles allowed determining structural distortions increasing with composition x. Photoluminescence (PL) experiments were performed under UV and X-ray excitations. The variations with composition x of PL emission intensities, corresponding to complex charge transfers and quenching effects, were interpreted in terms of transitions proper to Ce3+ and Sm3+ cations, accompanied by additional transitions probably due to oxygen vacancies and other point defects generated by substitution and synthesis conditions. The CIE chromaticity diagrams showed variable colors located in the orange-red range. |
| نوع الوثيقة: | report |
| اللغة: | English |
| Relation: | hal-02265574; https://univ-tln.hal.science/hal-02265574; https://univ-tln.hal.science/hal-02265574/document; https://univ-tln.hal.science/hal-02265574/file/Working-doc-Ce2%28WO4%293-HAL-v01.pdf |
| الاتاحة: | https://univ-tln.hal.science/hal-02265574 https://univ-tln.hal.science/hal-02265574/document https://univ-tln.hal.science/hal-02265574/file/Working-doc-Ce2%28WO4%293-HAL-v01.pdf |
| Rights: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.B3794148 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |