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Size effect on magnetic coupling in all-ferromagnetic superlattices

Abstract : The switching of ferromagnetic-to-antiferromagnetic coupling of magnetization in the superlattices consisting of two ferromagnetic metals La0.7Sr0.3MnO3 (LSMO) and SrRuO3 (SRO) grown on (001) oriented SrTiO3 has been observed by changing the orientation of the field from out–of–plane to in–plane direction. Such switching of magnetic coupling strongly depends on the stacking order of La0.7Sr0.3MnO3 and SrRuO3 layers in the superlattice of 20 unit cell (u.c.)/n (= 3 or 5) u.c. thickness configuration. This is explained by the structural distortion in the MnO6 and RuO6 octahedra along the out-of-plane direction due to the observed stress.
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Wilfrid Prellier, P. Padhan. Size effect on magnetic coupling in all-ferromagnetic superlattices. Applied Physics Letters, American Institute of Physics, 2011, 99 (26), pp.263108. ⟨10.1063/1.3673295⟩. ⟨hal-03545320⟩



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