Evidence for Ferromagnetic Order at the FeO(111) Surface
- 28 October 1996
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 77 (18) , 3921-3924
- https://doi.org/10.1103/physrevlett.77.3921
Abstract
By using spin-polarized secondary electron spectroscopy, we have found that the surface of FeO(111) prepared by oxidation of Fe(110) is ferromagnetically ordered above the bulk Néel temperature of 198 K. A possible cause of the ordering is the reconstruction of a polar FeO(111) surface to reduce electrostatic surface energy.Keywords
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