ISSN:
1432-0630
Keywords:
61.14.Fe
;
61.70.Tm
;
81.40.Cd
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Abstract The formation of copper/gold solid solutions due to ion beam mixing was studied by Rutherford backscattering, high-voltage electron microscopy and transmission high-energy electron diffraction. Irradiation of multilayered Cu/Au thin films were performed with Xe+ ions or Ar+ ions at room temperature to doses ranging from 5×1015 to 2.5×1016 ions/cm2 and energies from 100 to 300 keV. The ion beam mixing leads to uniformly mixed metal layers. The grain size of mixed layers is pronounced increase. It was found that Cu/Au solid solutions are formed with different composition in dependence on itinial composition and implantation dose. Cu-rich and Au-rich solid solutions are induced by ion beam mixing at an initial composition Cu x Au100−x withx≧70. In addition to these solid solutions, a solid solution of middle composition Cu60...40Au40...60 is formed for an initial composition withx〈70. The kinetics of formation of solid solution is discussed as a function of the initial composition and implantation dose. Post-annealing experiments of mixed Cu50Au50 multilayers lead to lattice transformations and provide a superlattice structure CuAuI of the L10-type. With this process of ordering is associated the formation of dislocation loops.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00616591
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