Nanoscale magnetic structure of ferromagnet/antiferromagnet manganite multilayers

Abstract

Polarized Neutron Reflectometry and magnetometry measurements have been used to obtain a comprehensive picture of the magnetic structure of a series of La{2/3}Sr{1/3}MnO{3}/Pr{2/3}Ca{1/3}MnO{3} (LSMO/PCMO) superlattices, with varying thickness of the antiferromagnetic (AFM) PCMO layers (0<=t_A<=7.6 nm). While LSMO presents a few magnetically frustrated monolayers at the interfaces with PCMO, in the latter a magnetic contribution due to FM inclusions within the AFM matrix was found to be maximized at t_A~3 nm. This enhancement of the FM moment occurs at the matching between layer thickness and cluster size, where the FM clusters would find the optimal strain conditions to be accommodated within the "non-FM" material. These results have important implications for tuning phase separation via the explicit control of strain.

4 pages, submitted to PRL

References in corpus (2)

• Suppressed magnetization in La${}_{0.7}$Ca${}_{0.3}$MnO${}_3$/YBa${}_2$Cu${}_3$O${}_{7-\delta }$ superlattices
• Magnetic field dependence of the magnetic phase separation in Pr1-xCaxMnO3 manganites studied by small-angle neutron scattering

Cited by in corpus (6)

• Magnetoelectric coupling at the interface of BiFeO3/La0.7Sr0.3MnO3 multilayers
• Tailoring magnetic anisotropy in epitaxial half metallic La0.7Sr0.3MnO3 thin films
• Effect of strain on the orbital and magnetic ordering of manganite thin films and their interface with an insulator
• Magnetoresistance in an all-manganite heterostructure
• Electron gas at the interface between two antiferromagnetic insulating manganites
• Colossal enhancement of magnetoresistance in La${}_{0.67}$Sr${}_{0.33}$MnO${}_3$ / Pr${}_{0.67}$Ca${}_{0.33}$MnO${}_3$ multilayers: reproducing the phase-separation scenario