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Information × Registration Number 0215U008216, 0112U001009 , R & D reports Title The theory of sound and spin waves in the vicinity of phase transitions in the lattice. popup.stage_title Head Baryakhtar V, Ivanov, Registration Date 22-12-2015 Organization Institute of magnetism of NASU popup.description2 The model of the dissipative function that describes the relaxation processes due to the damping of coupled magnetoacoustic waves in ferromagnets with different symmetry was developed. The resulting model of the dissipative function is based on the symmetry of the magnetic material, and describes both the exchange and relativistic interactions in the crystal. Expression for the Gibbs potential was developed for martensitic transformation of the real (with crystal defects) shape memory alloy in the framework of phenomenological Landau theory. Elaborated approach to the description of martensitic transformations allows one to model the influence of internal and external mechanical stresses on magnetic shape memory, magnetostriction, transformation deformation, elastic modulus, heat flow and entropy change of shape memory alloys. Product Description popup.authors Бар'яхтар В.Г. Данилевич О.Г. Косогор А.О. Львов В.А. popup.nrat_date 2020-04-02 Close