Cation disorder in Sr0.67Ba0.33Nb2O6 assessed by aberration corrected stem

Autor: L. López-Conesa, J.M. Rebled, A. Ruiz-Caridad, A. Torres-Pardo, M.L. Ruiz-González, J.M. González-Calbet, G. Dezanneau, S. Estradé, F. Peiró

Publikováno v: Results in Materials, Vol 3, Iss , Pp 100038- (2019)

The microstructure and composition of a single crystal of the relaxor Sr0.67Ba0.33Nb2O6 have been assessed by aberration corrected TEM. Electron diffraction showed the presence of diffuse intensity and superstructure incommensurate reflections, compa

Externí odkaz: https://doaj.org/article/1172fc3cbf2940568c2af5a796d0e1b1

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Surface atomic and chemical structure of relaxor Sr0.63Ba0.37Nb2O6(001)

Autor: G. Dezanneau, J. L. Wang, Bertrand Vilquin, Nicholas Barrett, Brice Gautier

Publikováno v: Applied Physics Letters
Applied Physics Letters, 2015, 106, pp.242901. ⟨10.1063/1.4922773⟩
Applied Physics Letters, American Institute of Physics, 2015, 106, pp.242901. ⟨10.1063/1.4922773⟩

International audience; The surface atomic and chemical structures of a Sr0.63Ba0.37Nb2O6(001) single crystal are studied using the low-energy electron diffraction (LEED) and X-ray photoelectron spectroscopy. Sharp, well-defined LEED patterns are obs

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7b1c7f930aa18696503da99fa777e1cb
https://cea.hal.science/hal-01489339v2/document

Influence of cation vacancies on structural and magnetic properties of La1−xMnO3+δ nanopowders

Autor: G. Dezanneau, A. Sin, M. Audier, O. Isnard, H. Roussel, H. Vincent

Publikováno v: Crystal Engineering. 5:347-354

La 1− x MnO 3+ δ ( x =0–0.3) nanopowders were prepared at low temperature (825 °C) from a sol–gel method. As results of chemical analyses and X-ray diffraction of products, two ranges of La/Mn ratios can be distinguished: for La/Mn 0.9 MnO 3

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::63119aac9b2080180c40c2739842538d
https://doi.org/10.1016/s1463-0184(02)00046-1

Determination of Oxygen Diffusion Coefficients in La1-xSrxFe1-yGayO3-δ Perovskites Using Oxygen Semi-Permeation and Conductivity Relaxation Methods

Autor: Aurélien Vivet, Pierre-Marie Geffroy, Y. Hu, G. Dezanneau, Thierry Chartier

Publikováno v: Journal of The Electrochemical Society
Journal of The Electrochemical Society, Electrochemical Society, 2014, 161 (3), pp.F153-F160. ⟨10.1149/2.003403jes⟩

International audience; This paper reports new evidence that oxygen surface exchange and bulk diffusion in a mixed conductor can be simultaneously determined via the oxygen semi-permeation method. Herein, we report the use of an original apparatus fo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dbcfda7976a95c0f0efb243381f1b753
https://hal-unilim.archives-ouvertes.fr/hal-00946321