X-ray and neutron scattering and X-ray spectroscopy for the study of defects in solid state materials
Abstract
Diffuse X-ray and neutron scattering were used to investigate defects and defects correlation in irradiated and doped solid state materials. Si, MgO and quartz were investigated after irradiation in a reactor at moderator temperature. After irradiation of Cu at 4.6K a correlation of the interstitial atoms in subcascades is observed. After electron irradiation of diluted Al(Ag)-alloys the interaction between defects and impurities was studied. The investigations on diluted Pb(Au)-alloys results in statements about the agglomeration degree of the Au-atom. For the interstitial alloy NbNx the force dipole tensor is determined and for point defects Stokes-Wilson scattering is observed and a concept for its description is given. The trapping of H and N was studied on the system NbNxHy. Neutron interreflex scattering clarify the local defect structure of D in Nb. Concentration and temperature dependence of diffuse scattering are determined on NbHx(Dx) and Nb-yMoyHx(Dx). Microscopic density fluctuations are observed and their spinodal temperature determined. The lowering of phase boundary and spinodal temperature with increasing Mo-concentration is explained by a lattice gas model with fluctuating field.
- Publication:
-
In Kernforschungsanlage Rept. on Res. Results in Solid State Nucl. Phys
- Pub Date:
- March 1984
- Bibcode:
- 1984rrss.rept..571B
- Keywords:
-
- Crystal Defects;
- Crystallography;
- Neutron Scattering;
- Solid State;
- X Ray Scattering;
- X Ray Spectroscopy;
- Agglomeration;
- Doped Crystals;
- Electron Irradiation;
- Interstitials;
- Neutron Irradiation;
- Temperature Dependence;
- Solid-State Physics