Yttrium arachidate multilayer films deposited on gold substrates by th
e usual Langmuir-Blodgett dipping technique have been investigated by
means of Rutherford backscattering and plasma desorption mass spectrom
etry. It turns out that the cation of the film-forming molecules is Y3
+. This is in contrast to a previous analysis where the cation was det
ermined to be Y(OH)(2+).