Zobrazeno 1 - 10
of 308
pro vyhledávání: '"B. Champagnon"'
Publikováno v:
Journal of Fundamental and Applied Sciences, Vol 4, Iss 1, Pp 101-107 (2015)
Sodium tetraborate (100 – x)(Na2B4O7.10H2O) – xV2O5, (x = 0 to 20 mole %) has been elaborated by splat cooling technique. Raman Measurements on the doped and non polish samples reveal the presence of the of α-NaVO3 crystal on the s
Externí odkaz:
https://doaj.org/article/0a00c1576758417aaa06112c7d1c8847
Publikováno v:
Physical Review B. 105
Autor:
V. V. Pashkina, B. Champagnon, S. Yu. Stefanovich, Antonio Aronne, Vladimir N. Sigaev, P. D. Sarkisov, Pasquale Pernice, S. S. Sukhov
Publikováno v:
Glass and Ceramics. 60:305-308
The first nonlinear optic nanocomposite based on a low-melting vitreous matrix and a ferrielectric crystal has been obtained. The matrix consists of lead-borate glass and the filler is single-phase powder of ferrielectric KNbSi2O7. The quadratic opti
Autor:
Angela Trapananti, C. Martinet, Camille Coussa-Simon, B. Champagnon, Dominique de Ligny, Thierry Deschamps
Publikováno v:
Journal of the American Ceramic Society. 93:2726-2730
In this study, we report the results of an in situ X-ray absorption spectroscopy investigation of the La2O3–B2O3–GeO2 (LBG) glass compressed in a diamond anvil cell until 17 GPa at ambient temperature. A pressure-induced coordination change of ge
Autor:
S. Yu. Stefanovich, V. A. Glazunova, V. Califano, T. E. Konstantinova, D. Vouagner, Yasuhiko Benino, Vladimir N. Sigaev, Esther Fanelli, Pasquale Pernice, Antonio Aronne, B. Champagnon, Takayuki Komatsu, Nikita V. Golubev
Publikováno v:
Journal of Non-Crystalline Solids. 354:873-881
Amorphous nanoheterogeneities of the size less than 100 A have been formed in glasses of the Li2O–Nb2O5–SiO2 (LNS) and Li2O–ZnO–Nb2O5–SiO2 (LZNS) systems at the initial stage of phase separation and examined by transmission electron microsc
Autor:
B. Champagnon, D. Vouagner, H. Hugueney, C. Coussa, Valeria Califano, C. Martinet, Vladimir N. Sigaev
Publikováno v:
Journal of Non-Crystalline Solids. 353:1910-1915
Glass isotropy could be broken by using the electric field of the 355 nm wavelength delivered by a nanosecond YAG: Nd 3+ laser. In this way, pulsed laser-induced birefringence was obtained in the La 2 O 3 –B 2 O 3 –GeO 2 (LBG) glassy system. Buri
Publikováno v:
Optical Materials. 28:1301-1304
Raman amplification presents a huge potential for optical communications. x PbO–(1 − x )GeO 2 glasses (with x = 0, 10%, 20%, 30% and 40% mol) are studied. The association of lead oxide and germanate is thought to be a suitable candidate for Raman
Publikováno v:
Materials Science and Engineering: C. 26:523-529
Luminescence characteristics of Er 3+ -activated, Yb 3+ -sensitised GeO 2 –Na 2 O–Nb 2 O 5 heavy metal germanate glasses have been investigated in the context of searching active media for laser devices. Optical absorption, emission spectra and d
Publikováno v:
physica status solidi (a). 202:316-329
Raman scattering, optical absorption and photoluminescence studies have been performed on Er3+-doped Na2O–Nb2O5–GeO2 germanate-based glasses. The main bands in the Raman spectra involve vibrational modes associated with the germanium oxide networ
Publikováno v:
Revue des Maladies Respiratoires. 21:811-814
Resume Introduction Nous rapportons deux cas de patients ayant developpe une sarcoidose avec adenopathies diffuses pour lesquels l’interrogatoire a mis en evidence des applications repetees de talc au niveau de zones cutanees irritees. Cas clinique