Open AccessЛазерно-индуцированные фазовые превращения в стеклообразных пленках Se, полученных вакуумно-термическим испарением
Author(s) -
Е.В. Александрович,
Е.В. Степанова,
К.Г. Михеев,
Г.М. Михеев
Publication year - 2018
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2018.17.46575.17373
Subject(s) - materials science , monoclinic crystal system , nucleation , amorphous solid , vacuum evaporation , laser , irradiation , thin film , optics , crystallography , nanotechnology , chemistry , crystal structure , physics , organic chemistry , nuclear physics
The results of the study of vitreous Se films obtained by a method of vacuum-thermal evaporation after their laser modification are presented. It is shown for the first time that a low-power laser irradiation of the film at a wavelength of 632.8 nm and room temperature results in a nucleation and growth of nanocrystallites of monoclinic and rhombohedral Se in an amorphous matrix of the film. The formation of the stable hexagonal Se phase is not observed. The appearance of nanocrystallites with an average size of ~20–30 nm is accompanied by a growth of a reflection coefficient of the film. The established new optical and structural properties of the formed films are stable in time at room temperature.