Jean-Raymond Gavarri
IM2NP Site de Toulon
Université du Sud Toulon-Var, Bâtiment R
BP 132
83957 La Garde Cedex
téléphone : + 33 (0) 4 94 14 23 11
fax : +33 (0) 4 94 14 21 68
mail : jean-raymond.gavarri@im2np.fr

Professeur, Université du Sud Toulon-Var


Domaines d'activité :


Publications récentes :

Guinneton F., J.C. Valmalette, J.R. Gavarri.- Nanocrystalline vanadium dioxide : synthesis and mid-infrared properties.- Optical Materials, vol. 15, n° 2, p. 111-114, 2000

Pierre C., J. Musso, J.R. Gavarri, F. Tabaries, J.P. Durand.- Relation between chemical treatments and defect structure of calcium carbonates in industrial ashes.- Waste Management, vol. 20, p. 299-309, 2000

Guinneton F., Sauques L. , Valmalette J.C., Cros F. and Gavarri J.R.- Comparative study between nanocrystalline powder and thin film of vanadium dioxide VO2 : electrical and infrared properties.- Journal of Physics and Chemistry of Solids, vol. 62, n° 7, p. 1229-1238, 2001

Guinneton F., Sauques L., Valmalette J.C., Cros F., Gavarri J.R.- Vanadium dioxide switching nanomaterials : role of microstructure on infrared properties.- XVIth Physical Metallurgy and Materials Science Conference on Advanced Materials and Technologies (AMT'2001), Nr 124, Rok XXII, Wrzesien-Pazdzirnik, p. 372-, 2001

Kopia-Zastawa A., Suliga I., Siwek A., Kusinski J., Villain S., Frémy M.A., Pischedda M.H., Gavarri J.R.- Chemical degradation in thermally treated ferrite/superconductor multiphase materials : modeling parameters.- Journal of Solid State Chemistry, vol. 160, p. 332-339, 2001

Muller C., Valmalette J.C., Soubeyroux J.L., Bouree F., Gavarri J.R.- Structural disorder and ionic conductivity in LiVO3: a neutron powder diffraction study from 340 to 890 K.- Journal of Solid State Chemistry, vol. 156, p. 379-389, 2001

Villain S. , Leroux Ch., Musso J., Frémy M.A., Pischedda M.H., Gavarri J.R.- Nanoparticles or thin films for gas sensor applications. Study of cerium dioxide systems.- XVIth Physical Metallurgy and Materials Science Conference on Advanced Materials and Technologies (AMT'2001), Nr 124, Rok XXII, Wrzesien-Pazdzirnik, p. 935-, 2001

Villain S., Ch. Leroux, J. Musso, M.A. Frémy, M.H. Pischedda, J.R. Gavarri.- Nanoparticles or thin films for gas sensor applications.- Inzynierieria Materialowa, n° 5, 124 – XXII, 2001

Thommerel E., Valmalette J.C., Musso J., Villain S., Gavarri J.R., Spada D.- Relations between microstructure, electrical percolation and corrosion in metal – insulator composites.- Materials Science & Engineering A, vol. 328, n° 1-2, p. 67-79, 2002

Villain S., Ch. Leroux, J. Musso, J.R. Gavarri, A. Kopia, M. Klimczak, J. Kusinski.- Nanoparticles and thin films of cerium dioxides: relations between elaboration process and microstructure.- Journal of Metastable and Nanocrystalline Materials, n° 12, p. 59-69, 2002

Villain S., Gavarri J.R., Thommerel E., Kopia A., Musso J., Valmalette J.C., Frémy M.A., Nigrelli E., Pischedda M.H.- Electrical percolation, reactivity and degradation in resistor-capacitor composite materials : modeling and predictions.- in "Recent Research Developments in Solid State Ionics", S.G. Pandalai (ed), Transworld Research Network, Trivandrum, India, à paraître, 2002

Villain S., Pischedda M.H., Nigrelli E., Godiart F., Gavarri J.R.- Degradation mechanism of composite electrodes subjected to alternating potentials : modelling and protection.- Corrosion Science, vol. 44, n° 4, p.657-673, 2002

Klimczak-Chmielowska M., Chmielowski R., Kopia Z., Kusinski J., Leroux C., Villain S., Saiztek S., Gavarri J.R. - The influence of copper on microstructure and catalytic properties of CeO2 thin films deposited by pulsed laser deposition. - High Temperature Material Processes, vol. 7, n° 3, p. 333-342, 2003

Thommerel E., Madigou V., Villain S.,  Musso J.,  Valmalette J.C., Gavarri J.R. - Microstructure modifications and  modulated piezoelectric responses in PLZT / Al2O3 composites. - Materials Science & Engineering B, vol. 97, p. 74-82, 2003

Aneflous L., Musso J., Villain S., Gavarri J.R., Benyaich H.- Effects of temperature and Nd composition on non-linear transport properties in substituted Ce1-xNdxO2-d cerium dioxides.- Journal of Solid State Chemistry, vol. 177, n° 3, p. 856-865, 2004

Guinneton F., Sauques L., Valmalette J.C., Cros F., Gavarri J.R.- Optimized infrared switching properties in thermochromic vanadium dioxide thin films: role of deposition process and microstructure.- Thin Solid Films, vol. 446, n° 2, p. 287-295, 2004

Klimczak-Chmielowska M., Chmielowski R., Kopia A., Kusinski J., Villain S., Leroux C., Gavarri J.R.- Multiphase CuOz-CeO2-d thin films by pulsed laser deposition technique : experimental texture evolutions and kinetics modeling.- Thin Solid Films, vol. 458, p. 98-107, 2004

Saitzek S., Guirleo G., Guinneton F., Sauques L., Villain S., Aguir K., Leroux C., Gavarri J.R.- New thermochromic CeO2-VO2 bilayers for optical or electronic switching systems.- Thin Solid Films, vol. 449, n° 1-2, p. 166-172, 2004

Chmielowska M., Kopia A., Kusinski J., Leroux Ch., Gavarri J.R.- Texture modifications in copper doped ceria thin films by pulsed laser deposition technique.- Proceedings of the XVIIth Physical Metallurgy and Materials Science Conference, Advanced Materials & Technologies, (AMT'2004), Lodz-Artorowek, Poland, Inzynieria Materialowa, NR3, 140, XXV Maj-Czerwiec, PL ISSN 0208-6247, Advanced Materials & technologies, p. 561-563, 2004

Leroux Ch., Saitzek S., Villain S. Gavarri J.-R., Klimczak M. Kopia A. Kusinski J.- Nano-powders and thin film of Cu-doped CeO2 for gas sensors.- Proceedings of the 13th European Microscopy Congress (EMC 2004), Antwerp, Belgium, vol II, p 95-96, 2004

Saitzek S., Guirleo G., Guinneton F., Sauques L., Villain S., Aguir K., Leroux C., Gavarri J-R.- Structural and optical properties of thermochromic bilayers Ceo2-Vo2.- Proceedings of the XVIIth Physical Metallurgy and Materials Science Conference, Advanced Materials & Technologies, (AMT'2004), Lodz-Artorowek, Poland, Inzynieria Materialowa, NR3, 140, XXV Maj-Czerwiec, PL ISSN 0208-6247, Advanced Materials & technologies, 2004

Saitzek S., Villain S., Fremy M-A., Leroux C., Nolibe G., Gavarri J-R.- Nanostructured pure and doped ceria catalysts for gas sensor applications.- Proceedings of the XVIIth Physical Metallurgy and Materials Science Conference, Advanced Materials & Technologies, (AMT'2004), Lodz-Artorowek, Poland, Inzynieria Materialowa, NR3, 140, XXV Maj-Czerwiec, PL ISSN 0208-6247, Advanced Materials & technologies, p. 231-233, 2004

Aneflous L., Villain S., Gavarri J-R., Musso J.A., Benyaich H., Benlhachemi A., Marrouche A. Elaborations and characterization of europium doped ceria solid solutions. Journal de Physique IV France, vol. 123, p. 35-39, 2005

Guinneton F., Sauques L, Valmalette J.C., Cros F., Gavarri J.R.- Role of surface defects and microstructure in infrared optical properties of thermochromic Vo2 materials.- Journal of Physics and Chemistry of Solids, vol. 66, n° 1, p. 63-73, 2005

Ouzaouit K., Benlhachemi A., Aneflous L., Benyaich H., Gavarri J.R., Musso J.A.- The influence of synthesis way and dopant on the crystallite sizes of ceria.- Journal de Physique IV France, vol. 123, p. 125-130, 2005

Gomes J.C., de Souza C.P., Gomes U.U., Gavarri J.R., Dallas J.P., Leroux C. Leaching process of cerium extraction from mixture of cerite-monazite mineral. Materials Science Forum, vol. 514-516, p. 1653-1657, 2006

Kopia A., Chmielowska M., Leroux Ch., Gavarri J.R., Kusiński J. Structural analyses of Nd doped CeO2 thin films deposited by means of laser ablation. Journal of Microscopy, vol. 223, p. 3, 2006

Ouzaouit K., Benlhachemi A., Benyaich H., Dallas J.P., Villain S., Musso J.A., Gavarri J.R. Electrical conductivity of BaCeO3 synthesized by new sol-gel method. Journal of Condensed Matter, vol. 7, 1, p. 94-97, 2006

Saitzek S., Villain S., Gavarri J.R. Nanocrystalline Cuox-Ceo2 systems for gas sensors : FTIR analyses of catalytic reactions. Material Science Forum, Trans Tech Publications, vol. 513, p. 1-14, 2006

Khachane M., Nowakowski P., Villain S., Gavarri J.R., Muller Ch., Elaatmani M., Outzourhite A., Luk'yanchuk I., Zegzouti A., Daoud M. Catalytic behaviors of ruthenium dioxide films deposited on ferroelectrics substrates, by spin coating process. Applied Surface Science, vol. 254, n° 5, p. 1399-1404, 2007

Saitzek S., F. Guinneton, L. Sauques, K. Aguir, J.R. Gavarri . Thermochromic CeO2–VO2 bilayers: Role of ceria coating in optical switching properties. Optical Materials,  vol. 30, n° 3, p. 407-415, 2007

Saitzek S., S. Villain, G. Nolibé, J.R. Gavarri. Electrical behaviour of catalytic nanostructured CeO2/CuOx composites under air–methane gas impulses. Applied Surface Science, vol. 253, n° 18, p. 7490-7496, 2007

Bakiz B., F. Guinneton, J.P. Dallas, S. Villain, J.R. Gavarri. From cerium oxycarbonate to nanostructured ceria: Relations between synthesis, thermal process and morphologies. Journal of Crystal Growth, vol. 310, n° 12, p.  3055-3061, 2008

Benlhachemi A., K. Ouzaouit, H. Benyaich, S. Villain, J.R. Gavarri. Catalytic behaviour of polycrystalline barium cerate in presence of air - methane mixtures. Physical and Chemical News, vol. 41, 2008

Chmielowska M., S.Villain, A. Kopia, J.P.Dallas,J.Kusinski J. R. Gavarri, Ch. Leroux. Ce1-xNdxO2- /Si thin films obtained by pulsed laser deposition; microstructure and conduction properties. Thin Solid Films, vol. 516, n° 12, p 3747-3754, 2008

Nowakowski P., Dallas J.P., Villain S., A. Kopia A.  and Gavarri J.R. Structure, microstructure, and size dependent catalytic properties of nanostructured ruthenium dioxide. Journal of Solid State Chemistry, vol. 181, no 5, 2008, p. 1005-1016,  2008

Nowakowski P., Kopia A., Villain S., Gavarri J.R. RuO2 thin films deposited by spin coating on silicon substrates: pH dependence of microstructure and catalytic properties. Journal of microscopy, acceptée, 2009

Nowakowski P., Villain S., Kopia A., Suliga I. and Gavarri J.R. Catalytic conversion of air-methane flow by nanostructured ruthenium dioxide: FTIR spectroscopy and modeling. Applied Surface Science, vol. 254, n° 18, p. 5675-5682, 2008

Saitzek S., F. Guinneton, G. Guirleo, L. Sauques, K. Aguir, J.R. Gavarri. VO2 thin films deposited on silicon substrates from V2O5 target: limits in optical switching properties and modeling. Thin Solid Films, vol. 516, n° 6, p.  891-897, 2008

Saitzek S., J-F. Blach, S. Villain, and J-R Gavarri. Nanostructured ceria: a comparative study from X-ray diffraction, Raman spectroscopy and BET specific surface measurements. Physica Status Solidi (a), vol. 1, p. 6, 2008




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