Positronics and nanotechnologies: Possibilities of studying nanoobjects in materials and nanomaterials by the method of positron-annihilation spectroscopy |
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| Authors: | V. I. Grafutin O. V. Ilyukhina G. G. Myasishcheva E. P. Prokopiev S. P. Timoshenkov Yu. V. Funtikov R. Burcl |
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| Affiliation: | 1.Institute of Theoretical and Experimental Physics,Moscow,Russia;2.Moscow State Institute of Electronic Technology (MIET),Zelenograd, Moscow,Russia;3.European Commission, Directorate-General Joint Research Centre,Institute for Energy,Petten,the Netherlands |
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| Abstract: | The method of positron-annihilation spectroscopy is shown to be one of the most efficient methods for determining sizes of nanoobjects (vacancies, vacancy clusters); free volumes of pores, cavities, and hollows; and their concentrations and chemical composition at the point of annihilation in porous systems and some defective materials (and generally in a lot of technologically important materials and nanomaterials). Experimental investigations of nanodefects in porous silicon, silicon, and quartz single crystals irradiated with protons and in quartz powders are briefly reviewed. |
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