Induced anisotropy in nanocrystalline FeCuNbSiB

Conference · Tue Nov 01 00:00:00 EST 1994 · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States)

OSTI ID:6657673

Emura, M; Severino, A M; Santos, A D; Missell, F P ^[1]

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1. Univ. de Sao Paulo (Brazil). Instituto de Fisica

The kinetics of induced anisotropy K[sub ind] was studied in nanocrystalline Fe[sub 73.5]Cu[sub 1]Nb[sub 3]Si[sub 13.5]B[sub 9], as well as in the amorphous precursor and in amorphous Fe[sub 78]B[sub 13]Si[sub 9]. The nanocrystalline alloy was produced from the precursor by annealing at 813 K for 1 h and possessed an average FeSi grain size of 13 nm, as determined from x-ray diffraction. Annealing in a 0.2 T field at 723--773 K, above [Tc] of the amorphous phase, resulted in low values of K[sub ind]. The data were compared to the micromagnetic theory of Kronmueller to determine activation energy spectra. K[sub ind] for the nanocrystalline alloy is well described by this theory, however, with an activation energy spectrum that is much narrower than for the amorphous alloys. The limiting value of the anisotropy is K[sub [infinity]] [approx] 13 J/m[sub 3] consistent with that expected for the anisotropy in Fe-20at%.Si with the DO[sub 3] structure.

• OSTI ID: 6657673
• Report Number(s): CONF-940629-; CODEN: IEMGAQ
• Journal Information: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States), Vol. 30:6Pt1; Conference: Intermag: 6th joint conference on magnetism and magnetic materials, Albuquerque, NM (United States), 20-23 Jun 1994; ISSN 0018-9464
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BORON ALLOYS
MAGNETIC PROPERTIES
MICROSTRUCTURE
COPPER ALLOYS
IRON BASE ALLOYS
NICKEL ALLOYS
SILICON ALLOYS
EXPERIMENTAL DATA
HYSTERESIS
MAGNETIC FIELDS
MAGNETIZATION
TRANSITION TEMPERATURE
ALLOYS
DATA
INFORMATION
IRON ALLOYS
NUMERICAL DATA
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
360104* - Metals & Alloys- Physical Properties
360102 - Metals & Alloys- Structure & Phase Studies