Medium-energy ion scattering studies of relaxation at metal surfaces

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Abstract
The creation of a surface leads to the rearrangement of the positions of the atoms composing the outerlayers of the crystal on a magnitude of hundredths of angstroms to angstroms. Medium-energy ion scattering combined with channeling and blocking (MEIS–CB) has become one of the most accurate methods to measure the three-dimensional (3D) structure of these relaxed and often reconstructed surfaces. The Ni(110) and NiAl(110) surfaces are used to demonstrate the effectiveness and accuracy of MEIS–CB as a method of 3D structural characterization of metal and alloy surfaces. Other recent MEIS–CB studies of metal relaxation are reviewed.

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