Friction and adhesion between C60 single crystal surfaces and AFM tips: Effects of the orientational phase transition

Article Abstract:

An investigation is presented of the nanotribological properties of C60 single crystal (111) and (100) surfaces around its orientational order-disorder phase transition temperature by atomic force microscopy and frictional force microscopy (AFM/FFM) in high vacuum. Results reveal that for both surfaces across the phase transition temperature, the friction force and the adhesive force between a C60 coated AFM tip and the C60 crystal surfaces exhibit discontinuous behavior.

Science & research, Research, Phase transformations (Statistical physics), Phase transitions (Physics), Atomic force microscopy

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Oxidation induced enhanced magnetic susceptibility of Co islands on Pt(111)

Article Abstract:

A study of the evolution of the magnetic properties of monolayer-high cobalt islands on a Pt(111) surface as function of their exposure to oxygen is presented. It is concluded that the reason for the reduction of the anistropy before the moment is due to preferential oxygen at the island edges, which are the main source of magnetic anisotropy.

Primary nonferrous metals, not elsewhere classified, Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum), Platinum, Cobalt, Analysis, Oxidation-reduction reaction, Oxidation-reduction reactions, Magnetic properties

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