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Hard magnetic properties in isotropic nanocomposite Pr2Fe14B/α-Fe ribbons

Authors
Journal
Journal of Magnetism and Magnetic Materials
0304-8853
Publisher
Elsevier
Publication Date
Volume
267
Issue
2
Identifiers
DOI: 10.1016/s0304-8853(03)00356-1
Keywords
  • Nanocomposite Pr2Fe14B/α-Fe Ribbons
  • Magnetic Properties

Abstract

Abstract We have studied the demagnetization behavior for melt-spun nanocomposite Pr 8Fe 87B 5 ribbons in this paper. We have defined H ex which reflects the magnetic hardening of α-Fe and H irr which expresses the irreversible reversal of magnetic hard phase. It is found that magnetization behavior can be well described using H ex and H irr. A magnetic single-phase behavior is observed as H irr approximately equals to H ex. Remanence enhancement is not only determined by the intergrain exchange coupling but also dominated by the anisotropy of Pr 2Fe 14B phase. To achieve a high energy product (BH) max, the ideal microstructure is discussed. The magnetic reversal in the ribbons is mainly controlled by inhomogeneous pinning of nucleated type.

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