Affordable Access

Publisher Website

Anomalous low temperature hysteresis properties of ferromagnetic metglasses

Authors
Journal
Journal of Magnetism and Magnetic Materials
0304-8853
Publisher
Elsevier
Publication Date
Volume
66
Issue
1
Identifiers
DOI: 10.1016/0304-8853(87)90134-x
Disciplines
  • Physics

Abstract

Abstract We report on measurements of hysteresis loops and initial permeability between room temperature and 1.6 K for the meglass systems Fe 80 − x B x , Fe 80 − x Ni x B 20, Fe 80 − x Mo x B 20 and (Co 93Fe 7) 75− x Mo x B 25. Above a temperature of typically 70 K the temperature dependence of the coercive force and the permeability can be well described by the conventional statistical potential theory for Bloch wall movements. At lower temperatures one observes definite deviations from the theoretical curves, which can be partially attributed to the blocking of minute crystalline ferromagnetic or antiferromagnetic inclusions. In addition in all metglasses one observes an exponential temperature dependence of the permeability below typically 20 K which is suggestive of a thermal activation of the Bloch wall movements.

There are no comments yet on this publication. Be the first to share your thoughts.