Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Yves Limoge"'
Publikováno v:
Journal of the Serbian Chemical Society, Vol 73, Iss 1, Pp 121-126 (2008)
SiO2 layers were deposited in a UHV chamber by 1 keV Ar+ ion sputtering from a high purity silicon target, using different values of the oxygen partial pressure (5×10-6–2×10-4 mbar) and of the ion beam current on the target (1.67–6.85 mA). The
Externí odkaz:
https://doaj.org/article/381c7e3bda5d445c8ca0b69f034c5301
Autor:
Yves Limoge
Publikováno v:
Comptes Rendus Physique. 9:370-378
Under irradiation, all materials experience various forms of structural evolution, from the simplest, associated with point defect creation and accumulation, to complex phase changes, either towards equilibrium or nonequilibrium structures. In nonmet
Publikováno v:
Defect and Diffusion Forum. :542-553
Despite its importance as a material in many domains, SiO2 is still a very badly known material from the point of view of materials science. Experimentally the silicon and oxygen diffusion has been determined in silica as well as in quartz, but sever
Autor:
Nataša Bibić, S. Poissonnet, Nebojša Romčević, Yves Serruys, Olivier Jaoul, Yves Limoge, Ivana Radovic
Publikováno v:
Materials Science Forum. 518:149-154
SiO2 layers were deposited by reactive d.c ion sputtering (using 1keV Ar+ ion gun) from a high purity silicon target in an oxygen ambient. The base pressure in the deposition chamber was 4.7·10-9mbar, and the substrate temperature was held at 550 °
Autor:
Guido Roma, Yves Limoge
Publikováno v:
Defect and Diffusion Forum. :127-132
In this paper we propose a couple of experimental lines in order to probe specific features of oxygen and silicon diffusion in -quartz and SiO2 in general. We start from the results of atomistic first principles calculations and from their prediction
Publikováno v:
Defect and Diffusion Forum. :115-120
Autor:
Layla Martin-Samos, Jean-Paul Crocombette, Emilio Artacho, Eduardo Anglada, Nicolas Richard, Yves Limoge, Guido Roma
Publikováno v:
Europhysics Letters (EPL). 66:680-686
We present a numerical study of the neutral oxygen defects in silica. This work was performed using two complementary approaches: molecular dynamics using an empirical potential and ab initio calculations. We show that the formation energy fluctuates
Autor:
Yves Limoge, Guido Roma
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 202:120-124
We present a study of several neutral and charged oxygen and silicon defects in α-quartz. We performed plane waves pseudopotential calculations in the framework of density functional theory in the local density approximation. We will show the struct
Publikováno v:
Physical Review Letters. 86:4564-4567
Publikováno v:
Defect and Diffusion Forum. :855-860