1972•Journal of the Physical Society of JapanRequires access

Magnetic Anisotropy of Fe-Al Alloys

H. Morita

Abstract

Magnetocrystalline anisotropy K 1 and induced magnetic anisotropy K u of Fe-Al single crystals containing about 20 at. % Al were measured with a torque meter. The K 1 of the 21.0 at. % Al alloy showed negative magnetic field dependence in high field, and the value of K 1 showed a maximum at 360 K. The behavior of K 1 is explained on the basis that a specimen is in a two-phase state, one of which is disordered matrix having positive K 1 and the other is precipitated Fe 3 Al phase having negative K 1 . The deviation of K u from directional order theory is explained by assuming that the shape anisotropy of Fe 3 Al particles plays an important role.

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Key concepts: Magnetocrystalline anisotropy, Anisotropy, Condensed matter physics, Materials science, Alloy, Phase (matter), Magnetic anisotropy, Field (mathematics)