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We have utilized the antiferromagnetic nature and structural/chemical compatibility of La 0.45 Sr 0.55 MnO 3 with highly spin polarized La 0.67 Sr 0.33 MnO 3 to prepare epitaxialexchange bias (EB) couples. A robust EB shift in magnetization hysteresis with associated interfacial exchange energy J ≈ 0.13 erg / cm 2 at 10 K along with enhanced coercivity is reported. The EB effect was engineered to bring coercivity contrast between La 0.67 Sr 0.33 MnO 3 and cobaltfilms in La 0.45 Sr 0.55 MnO 3 / La 0.67 Sr 0.33 MnO 3 / SrTiO 3 / Co magnetic tunnel junctions.
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