Origin of the magnetic anisotropy induced by stress annealing in Fe-based nanocrystalline alloy

Journal Article · Mon Apr 11 00:00:00 EDT 2005 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.1901807· OSTI ID:20702302

Ohnuma, M; Hono, K; Yanai, T; Nakano, M; Fukunaga, H; Yoshizawa, Y ^[1]

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1. National Institute for Materials Science, 1-2-1 Sengen, Tsukuba 305-0047 (Japan)

The dependence of the structural anisotropy of Fe-Si-B-Nb-Cu alloy on the applied stress during annealing has been studied by transmission x-ray diffraction. After crystallizing under stress, the Fe-Si nanocrystals show anisotropy in the lattice spacing of the (620) planes. Their elongations are proportional to the applied stress and show a linear correlation with the magnetic anisotropy energy, K{sub u}. These results indicate that K{sub u} originates from a magnetoelastic effect due to an elastic elongation of the Fe-Si phase constrained by the surrounding amorphous phase.

• OSTI ID: 20702302
• Journal Information: Applied Physics Letters, Vol. 86, Issue 15; Other Information: DOI: 10.1063/1.1901807; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AMORPHOUS STATE
ANISOTROPY
ANNEALING
BORON ALLOYS
COPPER ALLOYS
CORRELATIONS
CRYSTALS
ELONGATION
FERROMAGNETIC MATERIALS
IRON ALLOYS
NANOSTRUCTURES
NIOBIUM ALLOYS
SILICON ALLOYS
STRESSES
X-RAY DIFFRACTION