  Magnetic properties of SFS and SF ramp-type junctions with
$YBa_2Cu_3O_{7-\delta}$ (YBCO) electrodes (S), and the itinerant ferromagnet
$SrRuO_3$ (SRO - F), were investigated. We looked for a crossed Andreev
reflection effect (CARE) in which an electron from one magnetic domain in F is
Andreev reflected as a hole into an adjacent, oppositely polarized, domain
while a pair is transmitted into S. CARE is possible in SRO since the width of
its domain walls is of the order of the YBCO coherence length (2-3 nm). Our
junctions behave as typical magnetic tunneling junctions, as the conductance
spectra were always asymmetric, and a few showed bound state peaks at finite
bias that shifted with field according to the classical Tedrow and Meservey
theory. In many of our SFS junctions with a barrier thickness of 10-20 nm, a
prominent zero bias conductance peak (ZBCP) has been observed. This peak was
found to decrease \textit{linearly} with magnetic field, as expected for
Andreev and CARE scattering. In contrast, in SF junctions, the observed ZBCP
was found to decrease versus field almost \textit{exponentially}, in agreement
with the Anderson-Appelbaum theory of scattering by magnetic states in F. Thus,
transport in our SFS and SF junctions depends strongly on the size of the F
layer. We also found that in both cases, the ZBCP height at zero field
decreased with increasing magnetic order of the domains in F, in agreement with
the CARE mechanism.
