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Information × Registration Number 0212U007315, 0112U005190 , R & D reports Title "Dynamics of magnetic reversal the heterogeneous magnetic nanostraction and high- speed management methods a spin current"- the third year of project. popup.stage_title Head Krupa, Registration Date 27-11-2012 Organization Institute of magnetism of NASU popup.description2 The laser-induced dynamics of remagnetization and tunneling magnetoresistance effect is studied in tunneling magnetic junctions, made from ferrimagnetic nanolayers separated by nonmagnetic barrier nanolayers. It is shown that this dynamics is determined by features of non-adiabatic thermal demagnetization of ferrimagnetic sublattices and effective internal magnetic fields generated by laser pulses. These effective fields can be related to a laser-induced inverse magneto-optical Faraday effect, a laser-induced spin injection and unequal speeds of thermal sublattice demagnetization. In the first two cases it is established the conditions concerning a laser pulse duration and laser radiation intensity, necessary for activation of high-speed laser-induced remagnetization and tunneling magnetoresistance effect in investigated magnetic junctions. In the third case, i.e. under a purely thermal laser excitation of ferrimagnetic nanolayers, the effective remagnetization field related to a transient magnetic state with parallel sublattice magnetizations together with exchange interaction relaxation between sublattices of ferrimagnetic materials. Product Description popup.authors Коростіль А.М. Крупа М.М. popup.nrat_date 2020-04-02 Close