Výsledky vyhledávání - "Djémia, Philippe"

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Thermal modification of ZrCu metallic glass nanolaminates: Structure and mechanical properties

Autor: Brognara, Andrea, Jung, Chanwon, Poltronieri, Cristiano, Djemia, Philippe, Dehm, Gerhard, Ghidelli, Matteo, Best, James P.

The effects of thermal treatments on metallic glass nanolaminates (NLs), with a composition of Zr$_{24}$Cu$_{76}$ and Zr$_{61}$Cu$_{39}$ and a bilayer period of 50 nm, were explored to control their mechanical properties through annealing-induced ato

Externí odkaz: http://arxiv.org/abs/2407.13272

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Single-crystal elastic moduli, anisotropy and the B1-B2 phase transition of NaCl at high pressures: Experiment vs. ab-initio calculations

Autor: Xu, Feng, Belliard, Laurent, Li, Chenhui, Djemia, Philippe, Becerra, Loïc, Huang, Haijun, Perrin, Bernard, Zerr, Andreas

Single-crystal elastic moduli, Cij, and the B1-B2 phase transition of NaCl were investigated experimentally, using time-domain Brillouin scattering (TDBS), and theoretically, via density-functional-theory (DFT), to 41 GPa. Thus, we largely extended p

Externí odkaz: http://arxiv.org/abs/2209.10899

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Elastic and magnetoelastic properties of TbMnO3 single crystal by nanosecond time resolved acoustics and first-principles calculations

Autor: Hemme, Pierre, Djemia, Philippe, Rovillain, Pauline, Gallais, Yann, Sacuto, Alain, Forget, Anne, Colson, Dorothée, Charron, Eric, Perrin, Bernard, Belliard, Laurent, Cazayous, Maximilien

Publikováno v: J. Phys.: Condens. Matter 33, 495402 (2021)

Time resolved pump and probe acoustics and first-principles calculations were employed to assess elastic properties of the TbMnO3 perovskite manganite having orthorhombic symmetry. Measuring sound velocities of bulk longitudinal and shear acoustic wa

Externí odkaz: http://arxiv.org/abs/2109.15023

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Elastic properties assessment in the multiferroic BiFeO3 by pump and probe method

Autor: Hemme, Pierre, Djemia, Philippe, Rovillain, Pauline, Gallais, Yann, Sacuto, Alain, Forget, Anne, Colson, Dorothee, Charron, Eric, Perrin, Bernard, Belliard, Laurent, Cazayous, Maximilien

Publikováno v: Appl. Phys. Lett. 118, 062902 (2021)

We have performed elasticity measurements in the bulk multiferroic BiFeO3 (BFO) using acoustical pump and probe spectroscopy. The sound velocities of the (quasi)-longitudinal and of the two (quasi)-transverse acoustic waves along three independent di

Externí odkaz: http://arxiv.org/abs/2102.05580

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