The subject of this book is the investigation of lattice imperfections in semiconductors by
means of positron annihilation. A comprehensive review is given of the different positron …

Various experimental methods based on positron annihilation have evolved into important
tools for researching the structure and properties of condensed matter. In particular, positron …

Positron is an excellent probe of lattice defects in solids. A thermallized positron delocalized
in lattice can be trapped at open volume defects, eg vacancies, dislocations, grain …

1" 1. On the role of atomic defects in solids.-Atomic or point defects are the most simple
defects in solids. Due to the small size their direct observation by routine techniques is not …

The potential of positron annihilation spectroscopy (PAS) in the study of light alloys is
illustrated with special regards to age-hardening, severe plastic deformation, fatigue and …

Using the newly developed positron annihilation lifetime spectroscopy (PALS) facility with a
high count rate up to 3000 cps, in situ PALS experiments were performed for the first time on …

Thermal stability of ultrafine grained (mean grain size 150 nm) copper prepared by high
pressure torsion was studied by means of positron-lifetime spectroscopy correlated with …

Interstitial free steel with ultrafine-grained (UFG) structure was prepared by high-pressure
torsion (HPT). The development of the microstructure as a function of the number of HPT …

We consider the specific problem of the influence of an inhomogeneous distribution of
defects in solids on positron annihilation characteristics. In detail, we investigate the effect of …

A study on the induced changes in the vacancy-like defect structure and the dielectric
properties of K 0.5 Na 0.5 NbO 3 ceramics by the addition of different amounts, between 0 …