   Molecular dynamics simulations of laser-induced damage of nanostructures and solids.Diakhate, Momar  in Applied Physics A : Materials Science & Processing (2009), 96 Detailed reference viewed: 20 (5 ULg)Quantum dynamical study of the amplitude collapse and revival of coherent A1g phonons in bismuth: a classical phenomenon?Diakhate, Momar in Applied Physics A : Materials Science & Processing (2009), 96 Detailed reference viewed: 23 (7 ULg)Magnetocaloric effect in nano- and polycrystalline manganite La0.7Ca0.3MnO3; ; Fagnard, Jean-François et alin Applied Physics A : Materials Science & Processing (2008), 90(2), 237-241 La0.7Ca0.3MnO3 samples were prepared in nano- and polycrystalline forms by the sol-gel and solid state reaction methods, respectively, and structurally characterized by synchrotron X-ray diffraction. The ... [more ▼] La0.7Ca0.3MnO3 samples were prepared in nano- and polycrystalline forms by the sol-gel and solid state reaction methods, respectively, and structurally characterized by synchrotron X-ray diffraction. The magnetic properties determined by ac susceptibility and dc magnetization measurements are discussed. The magnetocaloric effect in this nanocrystalline manganite is spread over a broader temperature interval than in the polycrystalline case. The relative cooling power of the poly- and nanocrystalline manganites is used to evaluate a possible application for magnetic cooling below room temperature. [less ▲] Detailed reference viewed: 77 (8 ULg) Ion-beam analysis for cultural heritage on the AGLAE facility: impact of PIXE/RBS combination; ; et al in Applied Physics A : Materials Science & Processing (2008), 92(1), 43-50 The combination of particle-induced X-ray emission (PIXE) and Rutherford backscattering (RBS) is particularly fruitful for the study of cultural heritage objects. Several set-ups have been developed at ... [more ▼] The combination of particle-induced X-ray emission (PIXE) and Rutherford backscattering (RBS) is particularly fruitful for the study of cultural heritage objects. Several set-ups have been developed at the AGLAE facility of the Louvre Laboratory to implement these techniques with an external beam. Successively have been tested the simultaneous use of PIXE and RBS with a single beam of protons, the sequential application of PIXE with protons and RBS with 4He2+ ions and finally the simultaneous implementation of PIXE and RBS with high-energy 4He2+ ions. Several examples illustrate the benefits of these combinations of techniques. [less ▲] Detailed reference viewed: 38 (4 ULg)Minerals discovered in paleolithic black pigments by transmission electron microscopy and micro-X-ray absorption near-edge structure; ; Salomon, Hélène et alin Applied Physics A : Materials Science & Processing (2006) Detailed reference viewed: 15 (0 ULg)Magneto-transport characterization of Dy123 monodomain superconductors; Mucha, Jan ; Vanderbemden, Philippe et alin Applied Physics A : Materials Science & Processing (2005), 81(5), 1001-1007 We consider textured materials of the DyBa2Cu3O7 type seeded with a Nd123 seed as initiator. They are grown with an excess 20% Dy211 phase on a Dy2O3 substrate. We report chemical characterization ... [more ▼] We consider textured materials of the DyBa2Cu3O7 type seeded with a Nd123 seed as initiator. They are grown with an excess 20% Dy211 phase on a Dy2O3 substrate. We report chemical characterization, electrical resistivity, thermoelectric power and thermal conductivity over a broad temperature range as a function of an applied magnetic field up to 6 T. We show that specific features appear in the magneto-thermal transport properties, different in these materials from those found in single crystals and polycrystalline samples. We propose that two vortex regimes can be distinguished in the mixed phase, due to the intrinsic microstructure. We calculate the viscosity, entropy and figure of merit of the samples. [less ▲] Detailed reference viewed: 26 (11 ULg) |
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