The change of the LMM auger spectra in 3d-metals due to oxidation and its correlation with the change of the atomic magnetic moment. |
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| Authors: | Olga R Zheltysheva Dmitry V Surnin Dmitry E Guy Faat Z Gil'mutdinov Yuri V Ruts Vladimir I Grebennikov |
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| Institution: | Physical-Technical Institute of Ural Branch of RAS, The Laboratory of Atomic Structure and Surface Analysis, Physical-Technical Institute of UB RAS, Kirov st. 132, 426000 Izhevsk, Russia. |
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| Abstract: | The surfaces of crystalline samples of 3d-metals (Mn, Fe, Co, Ni, and Cu) and their stoichiometric oxides have been studied by Auger spectroscopy. A correlation between the change in the LVV (L-inner level-valence-valence electron transition) Auger intensities and the change of the squares of the corresponding atomic-magnetic moments has been observed. This is because of the complicated nature of the Auger process. That is, the Auger electron emission is a result of the inner atomic level excitation by electron impact and Auger annihilation of the inner-level hole. Therefore, the Auger process has been considered a second-order process, and spin polarization of the valence states has been taken into account for the LMM (L-inner level-M-inner level-M-inner level electron transition) Auger spectra of 3d-metals. |
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