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Information × Registration Number 0211U006692, 0109U006361 , R & D reports Title Induced external influences (electric and magnetic fields, pressure, temperature) phase transformations into alloys of transitive metals. popup.stage_title Head Valkov Victor Ivanovich, Registration Date 10-03-2011 Organization Donetsk Institute of Physics @ Engineering named after O.O.Galkin NAS of Ukraine popup.description2 Complex researches of influences of external factors (temperatures, pressure, magnetic and electric fields, concentration) are conducted for firmness of magnetic and resistive phase conditions in a number of various magnetics for finding-out of magnetic and transport properties which are caused by interrelation between a crystal structure, character of magnetic streamlining and a state and terms of distribution of carriers of an electronic current. An important place is taken a studying of polarisation of carriers of a current in investigated pniktids by means of effects of Andreevsky reflexion. The basic objects of researches selected multicomponent alloys on the basis of 3d-metals in macrocrystalline and nanocrystalline conditions, in particular alloys of systems Co{2-y}Mn{y}Sі{1-x}Ge{x}, MnFe(1-x)(Ge,Sі)x, Mn{2-x}A{x}Sb (A-Zn, Cu, Co), MnAs. This choice is related with possibility of technical use of properties of alloys, in particular in magnetic refrigerators, spintronic devices and memory devices. In the process of researches different methods were used including magnetic (in constant and pulse fields), magnetocaloric (in constant fields to 9 Tl) and also methods of nanocontact and tunnel spectroscopy. Measurings with use of these techniques are carried out at different sizes of hydrostatic pressure. For specification of a direction of searches, and also for deeper understanding of mechanisms structural and magnetostructural transformations, calculations are conducted from the first principles of simple spin polarised electronic structures and their communication with physical properties of these connections. The combined models are developed for using integrated characteristics ab іnіtіo calculations for the analysis of difficult magnetic structures. Product Description popup.authors Варюхін Дмитро Вікторович Головчан Олексій Віталійович Грибанов Ігор Федорович Дворніков Євген Олександрович Каменєв Віктор Іванович Сіваченко Олександр Павлович Таренков Володимир Юрійович Тодрис Боріс Михайлович popup.nrat_date 2020-04-02 Close