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Report No.

Effect of annealing on the magnetic microstructure of high-pressure torsion iron; The Relevance of higher-order contributions to the magnetic small-angle neutron scattering cross section

Bersweiler, M.*; Sato, Hirokazu*; Adachi, Nozomu*; Todaka, Yoshikazu*; Peral, I.*; Kohlbrecher, J.*; Zaporozhets, V. D.*; Metlov, K. L.*; Michels, A.*; Oba, Yojiro  

Magnetic microstructures in severely deformed iron produced via high-pressure torsion (HPT) straining have been investigated using small-angle neutron scattering. The results reveal that nonneglibible third-order scattering contribution in the inhomogeneities amplitude of magnetization is induced via HPT straining and the contribution becomes small with subsequent annealing. The contribution has negative values, which suggest that the inhomogeneity of the magnetic anisotropy enhanced via HPT is a possible origin of the third-order contribution.



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