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Registration Number

0214U008692, 0111U009545 , R & D reports

Title

Phase transformations, transfer phenomena and electromagnetic processes in heterogeneous condensed media with a complex structure

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Head

Poluektov Yuri, Доктор фізико-математичних наук

Registration Date

13-08-2014

Organization

National Science Center "Kharkiv Institute of Physics & Technology"

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Investigation of magnetic properties of materials, meta-materials and processes of propagation of electromagnetic waves therein was carried out in the following directions. An analog of the Tamm’s state, arising at the boundary of the two chain periodic structures in photonic and magneto-photonic crystals, was investigated. The analytic theory of standing spin waves in the sub-micron model magnetic elements was further developed. Presence of strong static magnetic spreading fields in different systems of permanent magnets is theoretically proved, conditions of their occurrence is determined and classification of these fields is carried out. Obtained results indicate the possibility of generation of spreading fields with the induction up to 10T in materials with giant magnetic anisotropy. The problem of morphological stability of interfacial boundaries in multiphase systems was studied. A concrete type of systems was analyzed: oxide layers in the gradient of the chemical potential of oxide taking into account the diffusion interaction between them. The problem of linear stability of boundaries of one oxide layer was solved both exactly and approximately (in the quasistationary approximation for diffusion inside a layer). Agreement of solutions demonstrated that much more simple approximate method gives a good result. Thus, very complicated problems on stability of great number of layers can be studied in the quasistationary approximation.

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Абизов Олександр Сергійович
Білозоров Дмитро Павлович
Безуглий Олексій Іванович
Давидов Леонід Миколайович
Копійченко Денис Юрійович
Мчедлов-Петросян Петро Отарович
Осмаєв Олег Аданійович
Полуектов Юрій Матвійович
Сльозов Віталій Валентинович
Сорока Олексій Олександрович
Танатаров Ігор Володимирович
Шаповалов Роман Володимирович
Шкловський Валерій Олександрович

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2020-04-02