Abstract
The influence of samarium on the magnetic and electron transport properties of amorphous Sm xFe 80−xB 20, 0 ⩽ × ⩽ 6, was investigated by Mössbauer spectroscopy and by electrical resistivity and magnetoresistance measurements. The resistivity of the alloys increases by about 5% in the temperature range from 78 to 290 K. For Sm 6Fe 74B 20 ribbons a positive contribution to the magnetoresistance was found. The averaged value of the 57Fe hyperfine magnetic field decreases slightly with increasing samarium content. Variations in the line intensities of Mössbauer spectra recorded for ribbons at 78 K indicate a rotation of magnetization towards the normal to the ribbon via positive magnetostriction.
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