Tailoring exchange bias in half-metallic La2/3Sr1/3MnO3 thin films for spin valve applications

Muduli, P. K.; Budhani, R. C.
May 2009
Applied Physics Letters;5/18/2009, Vol. 94 Issue 20, p202510
Academic Journal
We have utilized the antiferromagnetic nature and structural/chemical compatibility of La0.45Sr0.55MnO3 with highly spin polarized La0.67Sr0.33MnO3 to prepare epitaxial exchange bias (EB) couples. A robust EB shift in magnetization hysteresis with associated interfacial exchange energy J≈0.13 erg/cm2 at 10 K along with enhanced coercivity is reported. The EB effect was engineered to bring coercivity contrast between La0.67Sr0.33MnO3 and cobalt films in La0.45Sr0.55MnO3/La0.67Sr0.33MnO3/SrTiO3/Co magnetic tunnel junctions.


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