The influence of the magnetic field and the strain amplitude on the "giant" AE-effect and associated magnetomechanical damping is studied in amorphous ferromagnetic ribbons. Measurements are done at room temperature at frequencies between 100 and 300 Hz within the range of strain amplitudes from to and magnetic fields up to z 1 x lo4 A/m. A strong dependence of the magnetomechanical damping on the strain amplitude is observed. At the same time, the main contribution to the AE-effect is amplitude-independent. The obtained results are compared with the models considering reversible and irreversible processes of magnetic domain structure reconstructions. The top estimate of energy of the induced magnetic anisotropy in amorphous ribbon is received to K < 300 J/m3. , , r~r a~~c~o r o " AE-a##e~c~a PI C B J I~~H H O~O c HEIM MarHmoMexaHmecHoro 3 a~y x a~m IiepaType Ha qacToTax OT 100 no 300 Hz B mrrepsane aMnnnTyA ne#opMauMn OT no >iexaHmecxoro ~~T Y X~H M R OT aMnamyabi Ae@opMaqaa. B TO me speMfi O C H O B H O~~ mnan ~CCJIeHOBaHO BJIEIRaHHe MarHLlTHOrO IIOJIR 12 aMlIJI12TyAbI He@OpMalJLlH H a BeJIllWXHJ' B aMOP#HbIX @eppOMarH12THbIX JIeHTaX. kf3MepeHIIfI IIpOBeAeHbI IIpH HOMHaTHOfi TeM-II MarHLlTHOM nOJIe A 0 1 X 10' A/m. 06Hapylrce~a CHJIbHaR 3aBLICHMOCTb MWHLITO-B A E -~# #~K T OT aMnJI12TyAbI Ae#OpMaUHII He 3aBHCkiT. nOJlyseHHbIe pe3yJIbTaTbI 06cym-ZaIOTCJX B PaMHaX MOneJlefi O6PaTMMOa 12 ~e o 6 p a~~~o f i IIepeCTpO~KH MarHHTHOa HOMeH-HOfi CTPYHTYPbI. rIOJIyYeHa BePXHRR 0UeHKa 3HeprMH HaBeneHHOfi M W H M T H O f i aH1230-T~O~H R B aniop#Hofi JIeHTe, paman = 300 J/m3.

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The dislocation mobility in zinc single crystals was investigated by measuring the shear modulus changes at frequencies of ≈ 10 Hz over the temperature range from 100 to 300 °K. The activation parameters of dislocation motion in basal (0001) 〈11―20〉 and pyramidal {11―22} 〈1123〉 slip systems were determined. From the results obtained it is suggested that the dislocation mobility is controlled by a Peierls mechanism.

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