Positron Annihilation Characteristics in Zn1-xMgxSe Mixed Crystals |
| F. Firszt, J. Szatkowski, H. Męczyńska, S. Łęgowski Institute of Physics, N. Copernicus University, Grudziądzka 5/7, 87-100 Toruń, Poland K. Saarinen, P. Hautojarvi Laboratory of Physics, Helsinki University of Technology, 02150 Espoo, Finland A. Plazaola Elektrika eta Elektronika Saila, Euskal Herriko Unibersitatea, 644 p.k., 48080 Bilbo, Spain H. Reniewicza, L. Dobrzyńskia,b aInstitute of Physics, University at Białystok, Lipowa 41, 15-424 Białystok, Poland bThe Soltan Institute for Nuclear Studies, 05-400 Otwock-Świerk, Poland and S. Chabik Institute of Physics, Opole University, Oleska 48, 45-052 Opole, Poland |
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| Positron annihilation characteristics as a function of composition and annealing in zinc vapour were measured and compared with photoluminescence spectra for Zn1-xMgxSe mixed crystals with 0 ≤ x ≤ 0.6. The positron annihilation data show that there is a substantial number of divacancies present in the system under study. The concentration of such defects is reduced at least by the factor of two upon annealing in zinc vapour. |
| DOI: 10.12693/APhysPolA.94.300 PACS numbers: 78.70.Bj, 78.55.Et, 81.40.Ef |