Ion-beam-induced atomic transport and phase formation in the system nickel/antimony: Part I: Ion-beam mixing of bilayers and markers
1993
We report on the ion-beam mixing processes of Sb/Ni marker layers and bilayers under the irradiation of ions ranging from He to Pb, at 80 K and at room temperature. The concentration profiles are obtained by Rutherford backscattering spectroscopy with 900 keV α-particles. At 80 K, the bilayer mixing rates cannot be reproduced by purely ballistic mixing; the essentially linear scaling of the bilayer mixing rate with the energy F D deposited at the interface points to local spike formation. A transition to global spike formation seems to be visible for the Pb-irradiations. Additional mixing effects at 300 K are due to radiation enhanced diffusion and scale with √F D
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