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On the Use of MÖssbauer Nuclei as Probes of Radiation Induced Effects at Interfaces
Published online by Cambridge University Press: 25 February 2011
Abstract
Conversion electron M6ssbauer spectroscopy was used as a means of investigating radiation induced changes at thin film interfaces. 25 Å thick layers of 57Fe were evaporated onto substrates of Si,SiO2 and A12O3 andcovered with 150 Å 56Fe. Samples were then subjected to ion irradiation with 20 MeV C14+ to doses ranging from 1012 to 2x 1014 ions/cm2 and subsequently annealed in vacuum at 450 ºC. Mössbauer spectra were recorded before and after each step. The analysis revealed chemical alterations, induced by the ion bombardment, indicative of film-substrate bond formation and reconstruction of residual surface hydrocarbons. The results are interpreted in view of accompanying enhancements in thin film adhesion.
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- Copyright © Materials Research Society 1989