  Herein, we report the appearance of a large exchange bias (EB) effect in a
moderate cooling field (cooling field, H$_{FC}$ = 1 kOe) for the
314-Sr3YCo4O10.5 material. The exchange bias has started to appear near room
temperature and reaches a maximum value of 5.5 kOe at 4 K. The existence of
ferrimagnetic clusters in the compensated host in this layered structure
originates the large exchange anisotropy. Remarkably, the observed value of
moderate magnetic field induced exchange bias field is extremely large in
comparison with material systems which are recognized to exhibit giant exchange
bias effect. In combination with the feasibility of room temperature
application, the appearance of large exchange bias in a moderate cooling field
exemplifying the present material system as a promising class of compounds for
designing coherent magnetic materials with huge exchange bias in low/moderate
magnetic field.
