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Information × Registration Number 0216U008205, 0114U000562 , R & D reports Title Fundamentals of design and creation of heteroepitaxial structures of perovskite materials for instrument popup.stage_title Head Voronov Sergiy Alexandrovich, Registration Date 14-12-2016 Organization Faculty of аircraft and space systems NTUU "KPI" popup.description2 The object of study - ferroelectric heteroepitaxial structure. The purpose of work - development of technological bases of formation of heterostructures of complex oxides of active dielectrics. Research methods - the static and dynamic analysis of electrical and thermal properties of materials, methods, dielectric spectroscopy and X-ray, electron microscopy, the method of Raman spectroscopy, atomic force microscopy, methods of mathematical and theoretical physics. The theoretical basis for the formation of nanoscale ferroelectric structures and the basic theoretical principles of technological processes. Methods: synthesis heteroepitaxial structures of complex oxides; measurement technique RF plasma discharge characteristics, initial oxide synthesis method directly during film growth. A method of creating heterostructures based segnetoplenok deposited using RF sputtering; A new effect obtained by spraying a complex oxide by oxygen ions. Experimental data on the physics-chemical processes, increasing segnetoplenok, established features of display ferroelectric state when changing the heterostructure thickness of 8 nm to 1 micron. Obtain current-voltage characteristics of asymmetric RF discharge and results of optical emission spectroscopy spraying perovskite materials with oxygen ions. A new method for the quantitative determination of the generalized power parameter, found for the first time formalized the field it changes the corresponding qualitative and quantitative changes of film growth mechanisms of calcium titanate-lead. The method of determining the internal parameters of thin layers of complex oxides, which will solve the problem of multi-parameter conditions for obtaining, using the phase diagram, making it easier to obtain films with desired properties. The spectral characteristics ABO3 materials and parameters forming heteroepitaxial layers of perovskites. Polarized spectra obtained heteroepitaxial layers, developed a technological procedure of forming perovskite heterostructures. It has been found that the heteroepitaxial films of lead titanate, lanthanum obtained on the substrate Pt/MgO, focused parallel to the crystallographic axis Z (001), there are two-dimensional stresses that lead to the formation of 180° c-domain structure in the tetragonal phase, which has an important role in the the low-temperature phase transitions. The research results will be used in the electronically controlled microwave devices; in micro-electromechanical devices; ultrafast analog modulators in integrated optics; in infrared array converters. Product Description popup.authors Богорош Олександр Терентійович Гордійко Наталія Олександрівна Муравов Сергій Олександрович popup.nrat_date 2020-04-02 Close