Short-range order and atomic diffusion in liquid Ge and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>Si</mml:mi><mml:mn>20</mml:mn></mml:msub><mml:msub><mml:mi>Ge</mml:mi><mml:mn>80</mml:mn></mml:msub></mml:mrow></mml:math> investigated by neutron scattering and x-ray diffraction

a-Si : SHORT RANGE ORDER BY NEUTRON SCATTERING

We report in this paper a neutron scattering study of a-Si:H, undertaken in order to point out the part played by hydrogen in the structural properties. The use of the isotopic substitution method provide us with the three partial structure factors from which have been deduced the three corresponding pair partial correlation functions. Si-H and Si-H2 units have been directly put into light. The...

Atomic Structurethe Observation of Chemical Short Range Order in Liquid and Amorphous Metallic Systems by Diffraction Methods

Fast Neutron Irradiated Magnetite and Haematite Investigated by Neutron Diffraction

In this paper, we present new experimental results about crystallographic and magnetic properties obtained on magnetite Fe,04 and haematite a-FqO, samples irradiated by fast neutrons. Polycrystalline rods were irradiated at 350K by fast neutrons inside the core of Melusine nuclear reactor (CENG) in Grenoble at various fluences (4 lO", 9.2 1019 and 20 10'' neutronslcm~). The irradiated samples h...

EVALUATION OFDISLOCATION STRUCTURE AND CRYSTALLITE SIZE IN WORN AL-SI ALLOY BY X-RAY DIFFRACTION

Abstract: powerful method for the characterization of microstructures of crystalline materials in terms of crystallite size anddislocation structures. In this paper the effect of the sliding on the microstructure of A356 in the as-cast and heattreated conditions are studied, The X-ray phase analysis shows that with increasing applied load, the dislocationdensity is increased, whereas the crysta...

cohesion and cohesive devices in a contrastive analysis between ge and esp texts

the present study was an attempt to conduct a contrastive analysis between general english (ge) and english for specific purposes (esp) texts in terms of cohesion and cohesive devices. to this end, thirty texts from different esp and ge textbooks were randomly selected. then they were analyzed manually to find the frequency of cohesive devices. cohesive devices include reference, substitution, ...