New Highly Divided Ce−Ca-Based Oxyfluorides with UV-Shielding Properties: Study of the Ce1-xCaxO2-x and Ce1-xCaxO2-x-y/2Fy Series

Autor: Yolande Kihn, Laetitia Sronek, Jérôme Majimel, Christophe Legein, Michael Feist, Alain Demourgues, Jean-Yves Buzaré, Alain Tressaud, M. Body, Yvan Montardi

Publikováno v: Chemistry of Materials. 19:5110-5121

Coprecipitations of Ce(III) nitrates and Ca chlorides have been performed in basic medium at pH > 12 using NaOH, H2O2, and HF as fluorinating agent. Powders have been annealed under air at 600 °C d...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::786ec2b19bd0a9cfb8c0578ee3ece123
https://doi.org/10.1021/cm071482h

Experimental and Theoretical Characterization of the Optical Properties of CeO2, SrCeO3, and Sr2CeO4 Containing Ce4+ (f0) Ions

Autor: and Raymond Brec, Xavier Rocquefelte, Yvan Montardi, Myung-Hwan Whangbo, Stéphane Jobic, Fabrice Goubin

Publikováno v: Chemistry of Materials. 16:662-669

In an effort to find new UV absorbers, the optical properties of CeO2, SrCeO3, and Sr2CeO4 were examined by UV−visible diffuse reflectance measurements and electron energy-loss spectroscopy (EELS), and their electronic structures were investigated

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5caeeee42a15ac7513267f44706f1af9
https://doi.org/10.1021/cm034618u

Low-temperature Sinterable Ce0.9Gd0.lO1.95 Powder Synthesized through Newly-devised Heat-treatment in the Coprecipitation Process

Autor: Masakuni Ozawa, Yasuo Takeda, Bernard Pacaud, Eisaku Suda, Yvan Montardi, Masashi Mori

Publikováno v: Electrochemistry. 71:866-872

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::71db7a287689b134407ead5c9969fc89
https://doi.org/10.5796/electrochemistry.71.866

Analysis of the Refractive Indices of TiO2, TiOF2, and TiF4: Concept of Optical Channel as a Guide To Understand and Design Optical Materials

Autor: Alain Demourgues, Nicolas Viadere, Yvan Montardi, Fabrice Goubin, Stéphane Jobic, Myung-Hwan Whangbo, Alain Tressaud, Xavier Rocquefelte

Publikováno v: Inorganic Chemistry
Inorganic Chemistry, American Chemical Society, 2005, 44, pp.3589. ⟨10.1021/ic048259w⟩
Inorganic Chemistry, American Chemical Society, 2005, 44 (10), pp.3589-3593. ⟨10.1021/ic048259w⟩

5 pages; International audience; In an effort to gain insight into how optical properties of insulating materials are affected by a change in chemical composition, we investigated the dielectric functions of titanium dioxide, TiO2, and its fluorine-s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::718f765c84af18716055c463ffe0f826
https://hal.archives-ouvertes.fr/hal-00022283

The dielectric function of LnSF rare-earth fluorosulfides (Ln=La, Ce): experiment and theory

Autor: Damien Pauwels, Alain Demourgues, Xavier Rocquefelte, Stéphane Jobic, Yvan Montardi, Alain Tressaud, Fabrice Goubin

Publikováno v: Journal of Solid State Chemistry
Journal of Solid State Chemistry, Elsevier, 2004, 177 (8), pp.2833-2840. ⟨10.1016/j.jssc.2004.05.006⟩

International audience; The absorption properties of LaSF and CeSF in the UV-Visible range have been investigated on the basis of first principles density functional theory (DFT) calculations and from electron energy-loss spectroscopy (EELS) measurem

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e7660b476cb66b0fc36f4b6171609a8
https://hal.archives-ouvertes.fr/hal-00149758