XMCD at Fe L2,3 edges, Fe and S K edges on Fe7S8

Isabelle Letard (1) , Philippe Sainctavit (2) , Catherine Deudon (3)

1 ESRF - European Synchrotron Radiation Facility
2 IMPMC - Institut de minéralogie et de physique des milieux condensés
3 IMN - Institut des Matériaux Jean Rouxel

Pyrrhotite (Fe7S8) is a natural iron sulphide that can participate in rock magnetisation. Its elec- tronic structure is not yet surely described. X-ray magnetic circular dichroism (XMCD) at Fe L2,3 edges on Fe7S8, coupled with multiplet calculations, shows that iron is present only as Fe2+ in this magnetic iron sulphide. It reveals a strong magnetic orbital moment. XMCD at Fe and S K edges shows the quite strong Fe7S8:

Mots clés: Iron sulphide XMCD

Domaines: Science des matériaux [cond-mat.mtrl-sci]

Isabelle Letard, Philippe Sainctavit, Catherine Deudon. XMCD at Fe L2,3 edges, Fe and S K edges on Fe7S8. Phys Chem Minerals, 2007, 34, pp.113-120. ⟨10.1007/s00269-006-0132-8⟩. ⟨hal-00195319⟩