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Magnetic effects induced by self-ion irradiation of Fe films

Abstract : Iron magnetic moment enhancement is observed following the irradiation of iron films with 490 keV Fe$^+$ at room temperature. The iron magnetic moment enhancement increases to saturation with irradiation dose. Theenhanced magnetic moment decays exponentially to its value before the irradiation with a time constant of 5.2 months. The iron magnetic moment enhancement is attributed to the creation of vacancy clusters having a concentration of about 20 %, whereas the relaxation effects is attributed to the dissociation of these clusters.
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K. Papamihail, K. Mergia, F. Ott, Y. Serruys, Th. Speliotis, et al.. Magnetic effects induced by self-ion irradiation of Fe films. Physical Review B: Condensed Matter and Materials Physics, American Physical Society, 2016, 93, pp.100404(R). ⟨10.1103/PhysRevB.93.100404⟩. ⟨cea-02418717⟩

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