Zobrazeno 1 - 10
of 97
pro vyhledávání: '"J. F. Berar"'
Autor:
J. F. Berar, Louis Hennet, Guy Matzen, Dominique Thiaudière, David L. Price, Marie-Louise Saboungi, C. Landron
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2003, 207 (4), pp.447-452. ⟨10.1016/s0168-583x(03)01077-2⟩
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Elsevier, 2003, 207 (4), pp.447-452. ⟨10.1016/s0168-583x(03)01077-2⟩
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2003, 207 (4), pp.447-452. ⟨10.1016/s0168-583x(03)01077-2⟩
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Elsevier, 2003, 207 (4), pp.447-452. ⟨10.1016/s0168-583x(03)01077-2⟩
In a single diffraction measurement, on a multi-component high-temperature liquid, the measured S(Q) and G(r) are weighted averages of the partial functions for the different atom pairs, and different structural models can be consistent with the expe
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Autor:
Eric Collet, Hervé Cailleau, M. H. Lemée-Cailleau, M. Buron, J. F. Berar, Tadeusz Luty, Sylvain Ravy
Publikováno v:
Journal de Physique IV. 12:357-360
Mixed-stack charge-transfer (CT) complexes undergoing the neutral-ionic (N-I) phase transition are molecular materials formed of stacks where electron donor (D) and acceptor (A) molecules regularly alternate. In the N phase, the CT is low and molecul
Autor:
Tadeusz Luty, Hervé Cailleau, Norbert Karl, Eric Collet, Sylvain Ravy, M. Buron-Le Cointe, Piotr Czarnecki, M. H. Lemée-Cailleau, J. F. Berar
Publikováno v:
Europhysics Letters (EPL). 57:67-73
We report first direct evidence, by X-ray diffuse scattering, of lattice-relaxed charge transfer exciton strings, which are one-dimensional self-trapped multiadjacent excitons. These non-linear excitations are key objects in quasi–one-dimensional o
Autor:
Vassilis Dalakas, Jorge M. Garcia, J. F. Berar, Gaspar Armelles, Jean-Louis Hodeau, Maria Grazia Proietti, Hubert Renevier
Publikováno v:
Journal de Physique IV Proceedings
Journal de Physique IV Proceedings, EDP Sciences, 1997, 7 (C2), pp.C2-749-C2-751. ⟨10.1051/jp4:1997225⟩
Scopus-Elsevier
ResearcherID
Journal de Physique IV Proceedings, EDP Sciences, 1997, 7 (C2), pp.C2-749-C2-751. ⟨10.1051/jp4:1997225⟩
Scopus-Elsevier
ResearcherID
The effect of built-in strain on III-V epitaxial semiconductors has been investigated by Diffraction Anomalous Fine Structure (DAFS). We study two different systems in a different strain regime: a Strained Layer Superlattice of (GaP) 2 (InP) 3 grown
Autor:
Hubert Renevier, P. Wolfers, Vassilis Dalakas, J. Weigelt, R. Frahm, J. F. Berar, Stéphane Andrieu, Jean-Louis Hodeau
Publikováno v:
Scopus-Elsevier
Journal de Physique IV Proceedings
Journal de Physique IV Proceedings, EDP Sciences, 1997, 7 (C2), pp.C2-741-C2-743. ⟨10.1051/jp4:1997223⟩
Journal de Physique IV Proceedings
Journal de Physique IV Proceedings, EDP Sciences, 1997, 7 (C2), pp.C2-741-C2-743. ⟨10.1051/jp4:1997223⟩
Superlattice studies are important to synthesise 3d metals in new crystalline structure which may exhibit exotic magnetic properties. The challenge is to relate these properties to the details of the chemical gradient and the local strain. We report
Autor:
J. F. Berar, C. Landron, Louis Hennet, J.P. Coutures, David L. Price, Philippe Melin, Marie-Louise Saboungi, Dominique Thiaudière
Publikováno v:
Applied Physics Letters
Applied Physics Letters, American Institute of Physics, 2003, 83 (16), pp.3305-3307. ⟨10.1063/1.1621090⟩
Applied Physics Letters, 2003, 83 (16), pp.3305-3307. ⟨10.1063/1.1621090⟩
Applied Physics Letters, American Institute of Physics, 2003, 83 (16), pp.3305-3307. ⟨10.1063/1.1621090⟩
Applied Physics Letters, 2003, 83 (16), pp.3305-3307. ⟨10.1063/1.1621090⟩
The yttrium environment in liquid Y2O3 at 2770 K has been measured with anomalous x-ray scattering, aerodynamic levitation, and laser heating. The Y–O coordination of 6–7 and the Y–Y coordination of around 12 imply that the close packing of the
Autor:
Victor M. Orera, Mariano Laguna, E Palacios, Juan Bartolomé, María Luisa Sanjuán, Javier Rubín, M C Pique, J F Berar
Publikováno v:
Journal of Physics: Condensed Matter. 5:283-300
The structure of the low temperature phase of NH4MnF3 has been determined by means of X-ray powder diffraction using the Rietveld method. The structure is orthorhombic with space group Pnma, Z=4. The unit cell dimensions at T=83 K are a=5.952(1) AA,
Publikováno v:
ChemInform. 23
Publikováno v:
Journal of The Electrochemical Society. 139:1479-1482
This paper reports that fine structural determinations are utilized to illustrate the advantage of the use of mixed oxides as starting materials rather than mixtures of separated oxides, with respect to the expected performance of yttrium-europium ox