Temperature Study of the Antiferromagnetic Coupling at the Interface of La$_{0.7}$ Sr$_{0.3}$ MnO$_{3}$ and SrRuO$_{3}$ Bilayers

We have studied the antiferromagnetic coupling at the interface of the La
_0.7
Sr
_0.3
MnO
₃
/SrRuO
₃
bilayer as function of temperature. We measured the La
_0.7
Sr
_0.3
MnO
₃
magnetization reversal while the SrRuO
₃
magnetization is blocked due to a field cooled procedure and because of its high coercive field. Even if in this system, the La
_0.7
Sr
_0.3
MnO
₃
magnetization cycle may be explained by two exchange couplings which coexist up to 120 K, the exchange bias and the coercive field from 5 K to 300 K have a similar behavior from some ferromagnetic/antiferromagnetic systems.