Quenching of the Exchange Bias Training in Fe/Cr{sub 2}O{sub 3}/Fe Trilayer

Exchange bias (EB) and its associated training effects are studied in an epitaxial Fe(10 nm)/Cr{sub 2}O{sub 3}(2.7 nm)/Fe(10 nm) trilayer heterostructure grown by molecular beam epitaxy. The EB decreases linearly with increasing temperature from T = 5 K to T = 50 K. It changes sign and becomes positive within 50 K < T < 200 K, finally changing back to regular EB for T