Strain, magnetoresistive and magnetostrain effects in the film materials based on magnetic metals

Abstract

The results of investigations strain effect, magnetoresistance, anisotropic magnetoresistance and magnetostrain effects in films Fe_xNi_1–x (x = 25, 50, 64 and 75 аt. %), tunnel structure CoFe/a-Ge/ CoFe and Co-layer films. The features of deformation depends differential factor in film strain coefficient alloys FexNi1–x. The calculation of the value magnetoresistance (up 0.2 %) and anisotropic magnetoresistance (3,2–6,0 %) in the films CoFe/a-Ge/CoFe. Feature films magnetostrain effect in film Co is that in the an external magnetic field in elastic strain decreases the strain coefficient on 22 % in the range elastic strain, and in the field of plastic strain — increased to 25 %.