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Temperature stability of field induced anisotropy in soft ferromagnetic Fe,Co-based amorphous and nanocomposite ribbons

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posted on 2009-04-01, 00:00 authored by Paul Ohodnicki, David E. Laughlin, Michael MchenryMichael Mchenry, Vladimir Keylin, Joe Huth

The temperature stability of field induced uniaxial anisotropy(KU) was investigated by thermomagnetic treatments of (Co1−xFex)89Zr7B4amorphous ribbons after field annealing below and above the crystallization temperature. We conclude: (1) Field annealing treatments are necessary to properly investigate the temperature stability of KU, (2) KU of field crystallized alloys exhibit improved temperature stability relative to alloys remaining amorphous after field annealing, and (3) larger KU is obtained for field crystallization treatments as compared to zero-field crystallization followed by field reannealing. Field crystallization may be required for elevated temperature applications when field induced anisotropy is critical for performance.

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Copyright 2009 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article may be found at http://dx.doi.org/10.1063/1.3068547.

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2009-04-01

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