Roll Magnetic Anisotropy of Iron-Aluminum Crystals

Abstract

Magnetic anisotropy measurements and domain pattern observations were made on the rolled ${\mathrm{Fe}}_3\mathrm{Al}$ single crystals. Rolling parallel to [001] on a (110) plane induced a uniaxial anisotropy as large as ${\text{7.1×10}}^5\hspace{0.17em}\mathrm{erg}/\mathrm{cc}$ at 12% roll-reduction. The direction of easy magnetization was parallel to the roll direction. Calculations were made on the roll magnetic anisotropy in terms of the “slip-induced directional order model,” under the assumption of (110) (111) slip system. (110) [11̄0], (001) [010], and (001) [110] rollings were also investigated.