Search academic texts

Information × Registration Number 0223U000526, 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 11-01-2023 Organization National Technical University "Kharkiv Polytechnic Institute" popup.description2  The limits of the existence of quasi-crystalline and 2/1 approximant phases during vacuum annealing in magnetron coatings Ti41Zr38.3Ni20.7 (ат.%) were established, the phase transformation between them (QC→2/1АС) was studied, and the activation energy of the transformation was determined. The stability of these phases during irradiation with hydrogen plasma with a heat load of 0.2 MJ/m2 was established. QC icosahedral phase was found to be less prone to cracking than coatings with crystalline phases. It was established that the values of nanohardness, modulus of normal elasticity and strength for the 2/1AC phase are greater than for the QC phase. The value of strength for the 2/1AC phase exceeds this parameter for diamond-like coatings with greater thickness and better adhesion. Physical models of switching between states with high and low electrical resistance in the Mo/p-CdTe/Mo film structure under the action of electromagnetic pulses have been developed. For the first time, the simultaneous presence of S and N-type sections on the current-current characteristics of this structure was observed. It is shown that the device structures based on the CdS/CdTe film heterosystems are radiation resistant and can withstand powerful radiation-heat loads with an accumulated dose of 2.42×107 Gy. Physical mechanisms of degradation of these structures are proposed. Product Description popup.authors Baturin Oleksiy A Bohdanov Yuriy S Borysova Svitlana S. Kirichenko Mykhailo V. Kopylets Igor A Lyubov Viktor М. Makhlaj Vadym O Meriuts Andrii V Rudchenko Svitlana O Surovytskyі Serhiy V Fomina Larysa P popup.nrat_date 2023-01-11 Close