Magnetic and structural features of amorphous FeMo-based alloys

NANOPERM-type FeMoCuB alloys are studied using magnetic and Mössbauer measurements in the as-prepared amorphous state. It is shown that the Fe 76Mo 8Cu 1B 15 (A) and Fe 74Mo 8Cu 1B 17 (B) alloys exhibit the magnetic dipole and electrical quadrupole interactions well detected in the room-temperature...

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Bibliographic Details
Published in:Journal of magnetism and magnetic materials 2007-09, Vol.316 (2), p.e16-e19
Main Authors: Jiraskova, Yvonna, Marysko, Miroslav, Zboril, Radek
Format: Article
Language:English
Subjects:
Amorphous alloys
Magnetic properties
Magnetization
Mössbauer effect
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Summary:NANOPERM-type FeMoCuB alloys are studied using magnetic and Mössbauer measurements in the as-prepared amorphous state. It is shown that the Fe 76Mo 8Cu 1B 15 (A) and Fe 74Mo 8Cu 1B 17 (B) alloys exhibit the magnetic dipole and electrical quadrupole interactions well detected in the room-temperature Mössbauer spectra. The thermomagnetic measurements above the room temperature indicate a vanishing of the magnetic interactions at approximately 310 K (A) and at 340 K (B), respectively. The low-temperature DC magnetic measurements show an anomaly around 200 K which is also a boundary at which zero-field Mössbauer measurements of both samples reflect the gradual “vanishing” of the electrical quadrupole interactions and appearance of another magnetically ordered component. The Mössbauer measurements in the field of 4 MA/m yield a survival of quadrupole and an enhancement of magnetic dipole interactions.
ISSN:0304-8853
DOI:10.1016/j.jmmm.2007.02.012