  We present the fabrication and exploration of arrays of nanodots of $SrRuO_3$
with dot sizes between 500 nm and 15 nm. Down to the smallest dot size
explored, the samples were found to be magnetic with a maximum of the Curie
temperature $T_C$ achieved by dots of 30 nm diameter. This peak in $T_C$ is
associated with a dot-size-induced relief of the epitaxial strain, as evidenced
by scanning transmission electron microscopy.
