High-pressure polarized Raman spectra of Gd2 (MoO4 )3 : phase transitions and amorphization

Autor: Alain Pasturel, Guy Lucazeau, Olivier Le Bacq, Thierry Pagnier, Pierre Bouvier

Publikováno v: Journal of Raman Spectroscopy. 42:452-460

Polarized Raman spectra of a single crystal of gadolinium molybdate [Gd2(MoO4)3] were obtained between 1 atm and 7 GPa. Using a mixture of alcohols as the pressure-transmitting medium, YY, ZZ, XY components of scattering matrices were measured. The Z

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cc38d017218638d0a37273179ac3b4ef
https://doi.org/10.1002/jrs.2731

Stress and adhesion of chromia-rich scales on ferritic stainless steels in relation with spallation

Autor: Michel Dupeux, Anne Marie Huntz, Guy Lucazeau, Laurent Antoni, C. Valot, A. Galerie, F. Toscan, Julie Mougin

Publikováno v: Materials Research, Vol 7, Iss 1, Pp 81-88 (2004)
Materials Research
Materials Research, ABM, ABC, ABPol, SBCC, SBCr, SBMM, SBPMat, 2004, 7 (1), pp. 81-88. 〈10.1590/S1516-14392004000100012〉
Materials Research v.7 n.1 2004
Materials research (São Carlos. Online)
Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
Materials Research, Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol), 2004, 7 (1), pp. 81-88. ⟨10.1590/S1516-14392004000100012⟩
Materials Research, Volume: 7, Issue: 1, Pages: 81-88, Published: MAR 2004

International audience; The relation between chromia scale spallation during oxidation or cooling down of ferritic stainless steels is generally discussed in terms of mechanical stresses induced by volume changes or differential thermal expansion. In

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a65a9d6310d8cf64233df9fdc17df98
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392004000100012

Étude Raman de l'effet de taille nanométrique des cristallites sur le diagramme de phase P-T de la zircone

Autor: Guy Lucazeau, P. Bouvier

Publikováno v: Journal de Physique IV Proceedings
Journal de Physique IV Proceedings, EDP Sciences, 2001, 11 (PR10), pp.Pr10-79-Pr10-83. ⟨10.1051/jp4:20011010⟩

The phase transformations of 7, 13, 18nm nanocrystalline zirconia prepared by pyrosol technique and 10-15nm zirconia prepared by oxidation of zirconium alloys have been monitored by Raman spectrometry. It is shown that for these zirconia, the tetrago

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::07e04fea006bdd2f71115ce96912fcc6
https://doi.org/10.1051/jp4:20011010

Tungsten oxide reactivity versus CH4, CO and NO2 molecules studied by Raman spectroscopy

Autor: M. Boulova, Alexander Gaskov, Guy Lucazeau

Publikováno v: Sensors and Actuators B: Chemical. 81:99-106

Reactivity of different nanometric tungsten oxide was measured by in situ Raman spectroscopy coupled with electrical measurements during the reaction with CH4, CO and NO2 molecules in the temperature range of 50–250°C. Sample with the smallest cry

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2ea4f5c68268a876d68a9a1eaf4a1cee
https://doi.org/10.1016/s0925-4005(01)00938-8

Zone center phonon frequencies in tetragonal zirconia: lattice dynamical study and new assignment proposition

Autor: Guy Lucazeau, Himanshu Gupta, Pierre Bouvier

Publikováno v: Journal of Physics and Chemistry of Solids
Journal of Physics and Chemistry of Solids, Elsevier, 2001, 62 (5), pp.873-879. ⟨10.1016/S0022-3697(00)00243-2⟩

A normal mode calculation of the zone center phonons in the tetragonal structure of ZrO 2 compound has been performed with particular emphasis on the low frequency modes. A restricted set of stretching and bending force constants have been introduced

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6ec6f7521b11a1ab50629aeb74f4608f
https://doi.org/10.1016/s0022-3697(00)00243-2