Výsledky vyhledávání - "N. El Jouhari"

Caractérisation et approche structurale de verres du systeme La2O3–MgO–B2O3

Autor: G. Le Flem, M. Lafjij, Alain Lautié, L. Benarafa, N. El Jouhari

Publikováno v: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy [1994-...]
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy [1994-..], Elsevier, 2003, 59 (7), pp.1643-1653. ⟨10.1016/S1386-1425(02)00391-8⟩
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy [1994-..], 2003, 59 (7), pp.1643-1653. ⟨10.1016/S1386-1425(02)00391-8⟩

International audience; In this paper, a vitreous domain of the ternary system: xLa2O3–yMgO–zB2O3 characterised by X-ray diffraction is shown. Structural approach using vibrational spectroscopy and optical probe is realized for some of these glas

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c794a4e32b342ac138d5dc9c68d99f5d
https://doi.org/10.1016/s1386-1425(02)00391-8

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Structural Approach and Luminescence Properties of La1/6Pb1/3Zr2(PO4)17/6(SiO4)1/6:Eu3+

Autor: A. Benabad, K Bakhous, Jean-Michel Savariault, N. El Jouhari, F Cherkaoui, Jeannette Dexpert-Ghys

Publikováno v: Journal of Solid State Chemistry. 146:499-505

Rare earth phosphosilicates (Li 1− x Eu x ) 1/6 Pb 1/3 Zr 2 (PO 4 ) 17/6 (SiO 4 ) 1/6 0≤ x ≤1 have been synthesized via a sol–gel route. The powder X-ray diffraction has been analyzed with the Nasicon-type structure. The Rietveld analysis of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e139497a2ce295a9e5a89172f598d744
https://doi.org/10.1006/jssc.1999.8410

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Ce ? Mn energy transfer in the LaMgBO: Ce, Mn photoluminescent glasses

Autor: C. Parent, N. El Jouhari, G. Le Flem

Publikováno v: Annales de Chimie Science des Mat�riaux. 23:267-271

Summary In glassy LaMgB 5 O 10 : Ce, Mn the strong crystal field at the rare-earth site shifts the Ce 3+ emission towards a relatively low energy range for an oxide glass, around 400 nm. It contributes to increase the Ce 3+ → Mn 2+ energy transfer

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::73770e46a8bb0cd83f4f9bf33f452c77
https://doi.org/10.1016/s0151-9107(98)80071-8

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Photoluminescence of Ce3+, Tb3+, and Mn2+in Glasses of Base Composition LaMgB5O10

Autor: C. Parent, N. El Jouhari, G. Le Flem

Publikováno v: Journal of Solid State Chemistry. 123:398-407

The photoluminescence of Ce{sup 3+}, Tb{sup 3+}, and Mn{sup 2+} ions was studied in glasses of base composition LaMgB{sub 5}O{sub 10}. An NMR spectroscopy investigation proved the close arrangement of the boron oxygen network in both crystalline and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5d400b719e2fa18570c82886c1a8b5ff
https://doi.org/10.1006/jssc.1996.0195

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ChemInform Abstract: Luminescence of the Vanadate Group in Phosphovanadates with General Formula RbCaLa(PO4)2-x(VO4)x (0 < x ≤ 2)

Autor: C. Parent, A. Daoudi, N. El Jouhari, G. Le Flem

Publikováno v: ChemInform. 24

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::753b3c375745b09da0cf6f10e77fbb3d
https://doi.org/10.1002/chin.199319015

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Structural study and luminescence of TlSrLa(AsO4)2

Autor: M. Lafjij, A. Garcia, Gilles Wallez, G. LeFlem, A. Benabad, Pierre Gravereau, N. El Jouhari

Publikováno v: Materials Research Bulletin
Materials Research Bulletin, Elsevier, 2003, 38 (13), pp.1755-1765. ⟨10.1016/j.materresbull.2003.07.011⟩
Materials Research Bulletin, 2003, 38 (13), pp.1755-1765. ⟨10.1016/j.materresbull.2003.07.011⟩

This work presents the crystal structure and luminescent properties of TlSrLa(AsO{sub 4}){sub 2}. In this phase Tl{sup +} ions are located in large tunnels delimited by chains of alternating (AsO{sub 4}) and (Sr,La)O{sub 8} polyhedra. Thallium atoms

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e220831e26ef292700f1b0a5fc2ee2ec
https://hal.archives-ouvertes.fr/hal-00165454

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