Moment canting in metallic glass ribbons using spatially resolved Mossbauer spectroscopy

Author

Pankhurst, Quentin A. ; McCammon, Catherine A. ; Gibbs, Mike R J

Author_Institution

Dept. of Phys., Liverpool Univ., UK

Volume

29

Issue

6

fYear

1993

fDate

11/1/1993 12:00:00 AM

Firstpage

3460

Lastpage

3462

Abstract

Room temperature ⁵⁷Fe Mossbauer spectra of a field-annealed metallic glass of composition Fe₇₈B₁₃Si₉ were recorded at ten different 500 μm diameter locations on the ribbon, and compared with spectra obtained using a conventional 1 cm diameter Mossbauer source. Deviations of up to ±1.5% were observed in the difference spectra, indicating significant changes in the directions of the hyperfine fields at the Fe nuclei. Electron microprobe analysis showed that the iron composition of the ribbon varies by less than 0.3 at.%, and that these small variations are not correlated with the Mossbauer results. Mossbauer data show that as well as the possible atomic-scale non-collinear spin structure, changes to the distribution of moment directions occur on a length scale of hundreds of microns

Keywords

Mossbauer effect; boron alloys; canted spin arrangements; ferromagnetic properties of substances; iron alloys; magnetic properties of amorphous substances; magnetic structure; metallic glasses; silicon alloys; ⁵⁷Fe Mossbauer spectra; EPMA; Fe₇₈B₁₃Si₉; distribution of moment directions; field-annealed metallic glass; metallic glass ribbons; moment canting; noncollinear spin structure; Amorphous magnetic materials; Amorphous materials; Glass; Iron; Magnetic materials; Magnetostriction; Physics; Spatial resolution; Spectroscopy; Temperature;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.281196

Filename

281196