U. Scheithauer et al., COMBINED AES FACTOR ANALYSIS AND RBS INVESTIGATION OF A THERMALLY TREATED PT/TI METALLIZATION ON SIO2/, Fresenius' journal of analytical chemistry, 346(1-3), 1993, pp. 305-307
Pt/Ti metallisation bilayers are used as bottom electrodes for ferroel
ectric thin films. During deposition of the ferroelectric films, these
electrodes are exposed to elevated temperatures causing modifications
of the Pt/Ti bottom electrode. Diffusion and oxidation of the Ti adhe
sion layer have been studied by the application of factor analysis to
AES depth profile data and by RBS. Factor analysis was employed to ext
ract the chemical information from the measured AES spectra and to der
ive semiquantitative depth profiles of the identified material compoun
ds. RBS was used to obtain the quantitative depth distribution of the
elements. By the combination of both methods, diffusion and oxidation
processes were observed and could be precisely described.