Magnetic effects induced by self-ion irradiation of Fe films

K. Papamihail (1) , K. Mergia (1) , F. Ott (2) , Y. Serruys (3) , Th. Speliotis (1) , G. Apostolopoulos (1) , S. Messoloras (1)

1 NCSR - National Center for Scientific Research "Demokritos"
2 LLB - UMR 12 - Laboratoire Léon Brillouin
3 CEA-DES (ex-DEN) - CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire)

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.

Mots clés: Magnetic effects; irradiation Fe; self-ion; films

Domaines: Physique Nucléaire Expérimentale [nucl-ex]; Physique Nucléaire Théorique [nucl-th]

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 (1998-2015), 2016, 93, pp.100404(R). ⟨10.1103/PhysRevB.93.100404⟩. ⟨cea-02418717⟩