Journal
PHYSICAL REVIEW B
Volume 88, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.88.024413
Keywords
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Funding
- US NSF [DMR0856234, EPS-0814194]
- NSFC [11274221, 50932003]
- US DoE [DE-FG02-97ER45653]
- Shanghai Education Committee [12YZ018]
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We present a study of exchange bias generated at the interface between a polycrystalline Co film sputtered on a cleavage plane of single-crystal Ca2Ru0.98Fe0.02FeO4. The exchange bias is accompanied by an extremely large vertical magnetization shift that is characterized by 60% of the saturation magnetization in a 70-kOe cooling field. This phenomenon is seldom observed in other heterostructures. The effects of cooling-field amplitude and temperature on the exchange bias indicate that the magnetization shift results from a ferromagnetic contribution of canted moments in Ca2Ru0.98Fe0.02O4. A Type-I training effect is also observed, in which the hysteresis loop shrinks from both sides with cycling of the applied field.
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