Факультет електроніки та інформаційних технологій (ЕлІТ)
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Item Тemperature and Concentration Dependences of Anisotropic Magnetoresistance Film Materials(Sumy State University, 2015) Проценко, Сергій Іванович; Проценко, Сергей Иванович; Protsenko, Serhii Ivanovych; Гричановська, Оксана Анатоліївна; Гричановская, Оксана Анатольевна; Hrychanovska, Oksana Anatoliivna; Однодворець, Лариса Валентинівна; Однодворец, Лариса Валентиновна; Odnodvorets, Larysa Valentynivna; Проценко, Іван Юхимович; Проценко, Иван Ефимович; Protsenko, Ivan Yukhymovych; Shumakova, M.O.In framework the phenomenological approach the question of the temperature dependence of anisotropic magnetoresistance (AMR) at the fixed value inducing an external magnetic field (B) and the concentration dependence of AMR at the fixed B and T were analyzes. The obtained ratio to assess and predict the magnitude of thermal and concentration coefficients of AMR, virtually can not be done in the classical model, since it allows complex ratio with many uncertain parameters.Item Phenomenological Theory of Strain Effect in Granular Film Alloys(Sumy State University, 2014) Однодворець, Лариса Валентинівна; Однодворец, Лариса Валентиновна; Odnodvorets, Larysa Valentynivna; Shumakova, M.O.; Проценко, Іван Юхимович; Проценко, Иван Ефимович; Protsenko, Ivan Yukhymovych; Шабельник, Юрій Михайлович; Шабельник, Юрий Михайлович; Shabelnyk, Yurii Mykhailovych; Шумакова, Наталія Іванівна; Шумакова, Наталия Ивановна; Shumakova, Nataliia IvanivnaThe elementary theory tensoresistive effect in granular thin film materials was proposed. Analyzed limiting cases of large, small and normal concentration of magnetic granules. It is concluded that in all three cases, the strain coefficient is defined tensoresistive properties of the matrix solid solution film samples as granules sold ballistic electrocarry charge.Item Influence of Magnetic Field on Thermal Coefficient of Resistance of the Granular Film Alloys(Sumy State University, 2014) Однодворець, Лариса Валентинівна; Однодворец, Лариса Валентиновна; Odnodvorets, Larysa ValentynivnaThe elementary theory about the effects of external magnetic field on the value of the thermal coefficient of resistance (B) granular alloy film was proposed. The obtained value allows calculating the difference between the value B for the sample and solid solution, which based on the granular alloy was formed.Item Тhermoresistive Properties of Film Systems with Elements of Granular State(Sumy State University, 2014) Hrychanovs’ka, O.A.; Karpenko, K.H.; Однодворець, Лариса Валентинівна; Однодворец, Лариса Валентиновна; Odnodvorets, Larysa Valentynivna; Проценко, Сергій Іванович; Проценко, Сергей Иванович; Protsenko, Serhii Ivanovych; Panchal, C.J.; Kher, V.H.; Mehta, P.K.; Poduremne, D.V.; Protsenko, I.Yu.The question about the conditions of formation granular solid solutions (systems based on components with limited or unlimited solubility) or peculiar quasigranular films (systems with mutual solubility of the components and the formation of intermetallic phases in the bulk samples). On example of the first film (Ag/Fe/S) and second (Fe/Pt/Fe/S, [Fe/Pt]8 /S) films types the temperature and concentration dependences of the resistance and thermal coefficient of resistance (TCR) were studies. It is concluded that the value of TCR will always depend on the composition (type of crystal lattices) termostabilize film material, rather than on the efficiency of electron scattering in granules or quasigranular because they will most likely realized ballistic charge transport mechanism.