Received October 3, 2016, revised November 19, 2016
Results of the study of AFM images of crystalline SnTe, condensed on the glass-ceramic substrate, are presented. We used a two-dimensional Fourier trans-form sequentially forward and backward on the most intense frequencies for the analysis of the results. The hidden periodicity in the arrangement of objects on the surface of films is established, which is confirmed by a two-dimensional autocorrelation function of the image. A one-dimensional Fourier transform is applied to the distribution of the azimuth angle of the vector normal to the surface. It is found that the surface has a constant set of symmetry elements, even though the sizes of the surface objects are monotonically dependent on the deposition time. Approximation of the polar angle vector distribution was performed using a normal single one-modal function whose form is independent on the deposition time.
PACS: 61.05–a Techniques for structure determi-nation