Thermal stability of magnetic microstructures in Nd60Fe30Al10 melt spun alloys

The glass-forming Nd60Fe30A110 alloy, processed by melt spinning, exhibits hard magnetic properties. For a relatively wide range of quenching rates, a single magnetic phase behavior is observed at room temperature, with coercivities between 0.1 and 0.4 T. As the quenching rate decreases, the hard ma...

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Published in:Physica. B, Condensed matter Condensed matter, 2004-12, Vol.354 (1-4), p.217-219
Main Authors: MUTAL, Rubén, BILLONI, Orlando V, FABIETTI, Luis M, URRETA, Silvia E
Format: Article
Language:English
Subjects:
Amorphous and quasicrystalline magnetic materials
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Magnetic properties and materials
Physics
Studies of specific magnetic materials
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description The glass-forming Nd60Fe30A110 alloy, processed by melt spinning, exhibits hard magnetic properties. For a relatively wide range of quenching rates, a single magnetic phase behavior is observed at room temperature, with coercivities between 0.1 and 0.4 T. As the quenching rate decreases, the hard magnetic properties improve and the thermal stability of the resulting magnetic microstructure - as measured by the reciprocal of the mean fluctuations field Hf - decreases. The hysteresis and thermal relaxation properties observed for different cooling rates are discussed on the basis of domain wall movement in a ferromagnetic matrix in which small, highly anisotropic clusters develop as the quenching rate decreases.
doi_str_mv 10.1016/j.physb.2004.09.051
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subjects Amorphous and quasicrystalline magnetic materials
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Magnetic properties and materials
Physics
Studies of specific magnetic materials
title Thermal stability of magnetic microstructures in Nd60Fe30Al10 melt spun alloys
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