Author/Authors :
Pearl، نويسنده , , T.P. and Darling، نويسنده , , S.B and Niu، نويسنده , , L and Koleske، نويسنده , , D.D and Gaspar، نويسنده , , D.J and King، نويسنده , , S.F and Sibener، نويسنده , , S.J، نويسنده ,
Abstract :
We have observed that the reconstruction dynamics for stepped Ni(9 7 7) are influenced by the oxygen dissolution history of the crystal. Using a complementary approach incorporating both real- and reciprocal-space techniques, it is found that the upper end of the thermal range over which this stepped metal surface transforms from single to double steps increases with selvedge or sub-surface oxygen concentration. These results enhance our understanding of how adsorbate dissolution, and hence oxygen exposure history, modify energetic pathways for metallic oxidation.
