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Gold ions were implanted at an energy of 1.1 MeV into (100) oriented MgO single crystals. In order to form gold colloids from the as-implanted samples, the samples were annealed in three different kinds of atmospheres: (1) Ar only, (2) 10% H 2 +90% Ar, and (3) 10% O 2 +90% Ar. Annealing over 1200 o C enhanced the gold colloid formation as is evident from the appearance of the...
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