Mössbauer Study of Magnetic Properties of Fe80-xCoxZr7Si13 (x = 0-30 at.%) Boron-Free Amorphous Alloys
M. Kopcewicza, A. Grabiasa, J. Latuchb, J. Ferencb, R. Żuberek c, and K. Nesteruk c
aInstitute of Electronic Materials Technology, Wólczyńska 133, 01-919 Warszawa, Poland
bFaculty of Materials Science and Engineering, Warsaw University of Technology, Wołoska 141, 02-507 Warszawa, Poland
cInstitute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warszawa, Poland
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Amorphous Fe80-xCoxZr7Si13 (x = 0-30 at.%) alloys in which boron was completely replaced by silicon as a glass forming element have been prepared by melt quenching. Partial substitution of iron by cobalt caused the increase of the hyperfine field and saturation magnetization. The specialized rf-Mössbauer measurements revealed that all amorphous alloys studied are magnetically very soft. The rf-sidebands effect, related to magnetostriction, increases with the increase of Co content. In Fe50Co30Zr7Si13 sample the rf field exposure induced partial crystallization of amorphous phase that was attributed to mechanical deformations related to high frequency magnetostrictive vibrations induced by the rf field. The measurements of the hysteresis loop revealed that coercivity increases for higher Co content.
DOI: 10.12693/APhysPolA.121.1257
PACS numbers: 75.50.Kj, 75.60.-d, 76.80.+y, 82.80.Ej