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Epitaxial iron-silicide (α-FeSi 2 , ε-FeSi and β-FeSi 2 ) nanodots were grown on Si(111) substrates with SiO 2 ultrathin films by Fe deposition on Si nanodots. The nanodots were characterized in-situ by reflection high-energy electron diffraction and scanning tunneling microscopy, and ex-situ high resolution transmission electron microscopy (HRTEM). For the β-FeSi 2 ...
Nanometre-sized tungsten (W) clusters were prepared on MgO(001) single crystalline films using vacuum deposition by burning of a thin W wire. The structure was studied by high-resolution electron microscopy and electron diffraction. The clusters had a b.c.c. structure, but not the A-15 structure which is known as the stable form for small particles of b.c.c. metals. This result is due to the strong...
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