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Information × Registration Number 0222U002105, 0121U111699 , R & D reports Title Physics of interaction of materials based on of chalcogenide semiconductor and quasi-crystalline film systems with ultrahigh-frequency electromagnetic radiation and powerful radiation influence popup.stage_title Head Malykhin Serhii V., Доктор фізико-математичних наук Registration Date 09-02-2022 Organization National Technical University "Kharkiv Polytechnic Institute" popup.description2  he objects of research are the regularities of changes in the physical properties of device structures based on semiconductor and quasicrystalline film systems, which occur under the influence of pulsed electromagnetic radiation of the microwave and optical range and hydrogen plasma. The aim of this work is to establish new effects and regularities of changes in the structural state and physical, electrophysical and physicomechanical properties of semiconductor and quasicrystalline functional film systems when interacting with microwave electromagnetic radiation and powerful radiation-plasma exposure. Research methods: X-ray diffraction and X-ray fluorescence analyses, methods of electron-optical analysis, electrical measurements, and vacuum methods for obtaining thin films in particular. The features of the phase composition, structure formation and thermal stability of thin films of Ti-Zr-Ni quasicrystals have been studied. For the first time, the formation of the crystalline approximant 2/1, which was not previously mentioned in the literature in this system, was established. Since the structures of all three indicated phases (i, 1/1, and 2/1) are based on the same multi-shell atomic cluster (triacontahedron), phase changes upon annealing consist in the ordering of both the clusters themselves and the atoms inside the cluster. Experimental stands for the generation of nanosecond electrical and light pulses for the study of high-frequency properties of semiconductor and quasicrystalline materials have been developed and tested. An electronic power supply unit has been created that provides a single pulse trigger for setting up the system, as well as an automatic control system for the operating mode. The preliminary characteristics of the switching of Mo/CdTe/Mo samples between states with high and low electrical conductivity have been established. Product Description popup.authors Kirichenko Mihail V Malykhin Sergey Makhlaj Vadym O Meriuts Andrii popup.nrat_date 2022-03-09 Close