The spin distribution of a plastically deformed Pt3Fe single crystal

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Abstract
The magnetization curves of a plastically deformed Pt3Fe single crystal were measured, applying the external field in three orthogonal directions (110), (110) and (001), in the temperature range from 77 K to room temperature. The spontaneous magnetization Ms, is anisotropic; Ms along (001) is smaller than that along (110) and (110) below 180 K and above 180 K they are isotropic. The ferromagnetism is referred to the atomic rearrangement in the antiphase boundary (APB) between superpartial dislocations; Fe-Fe atom pairs along the APB are located at the first-nearest neighbour positions with a two-dimensional distribution. The three-dimensional values of Ms give information about the spin distribution of Fe atoms near the APB; the spin orientation of the ferromagnetic couplings or the easy axis of magnetization is one of the (100) directions that is perpendicular to the Burgers vector of the superpartial dislocations.

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