Mössbauer Effect for Surface Atoms: Iron-57 at the Surface of η A12O3

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Science  27 Mar 1964:
Vol. 143, Issue 3613, pp. 1434-1436
DOI: 10.1126/science.143.3613.1434


The Mössbauer effect has been observed for Fe57 atoms at the surface of η Al2O3. The Fe57 is trivalent, and the quadrupole splitting found is consistent with a surface location. Anisotropy of thermal vibration relative to the surface is observed.

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