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Anomalous magnetic anisotropy and magnetic nanostructure in pure Fe induced by high-pressure torsion straining

高圧下ねじり加工によって誘起された鉄中の磁気ナノ構造と磁気異方性の異常

大場 洋次郎; 足立 望*; 戸高 義一*; Gilbert, E. P.*; 間宮 広明*

Oba, Yojiro; Adachi, Nozomu*; Todaka, Yoshikazu*; Gilbert, E. P.*; Mamiya, Hiroaki*

Formation of nanosized spin misalignment was found in pure iron processed by high-pressure torsion straining. The small-angle neutron scattering profiles show that the spin misalignment remains in magnetic field up to 10 T, whereas the magnetization is almost saturated below 1 T based on the magnetic measurement. These results indicates that anomalous magnetic anisotropy is induced in pure iron via the high-pressure torsion straining.

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