  Nanostructured superconductor/ferromagnet heterocontacts are studied in the
different transport regimes of point-contact spectroscopy. Direct measurements
of the nanocontact size by scanning electron microscopy allow a comparison with
theoretical models for contact-size estimates of heterocontacts. Our
experimental data give evidence that size estimates yield reasonable values for
the point-contact diameter $d$ as long as the samples are carefully
characterized with respect to the local electronic parameters.
