  Transport measurements in ramp-type junctions of
$YBa_2Cu_3O_y-SrRuO_3-YBa_2Cu_3O_y$ with $T_c$ values of either 80-90 K or
60-70 K are reported. In both type of junctions but without a barrier
("shorts"), the supercurrent densities at 4.2 K reached 7.5 and 3.5 MA/cm$^2$,
respectively, indicating the high quality of the fabrication process. Plots of
the critical current versus thickness of the ferromagnetic barrier at 4.2 K
show exponential decays with decay lengths of 1.1 nm for the 90 K phase and 1.4
nm for the 60 K phase, which are much shorter than the relevant coherence
lengths $\xi_F\sim 5-6$ nm or $\xi_N\sim$16 nm of $SrRuO_3$. We thus conclude
that there is no dominant proximity induced triplet superconductivity in the
ferromagnet in our junctions.
