Abstract
Oxide superlattices composed of ferromagnetic (LBMO) and paramagnetic (LNO) were grown on (001) substrates with dual-gun radio-frequency magnetron sputtering. The (00L) crystal-truncation-rod intensity profiles confirm the formation of a superlattice structure. The LBMO layer in the artificial superlattice structure is under biaxial compressive stress, whereas the LNO layer is under biaxial tensile stress. Experiments involving X-ray scattering, absorption, and atomic-force microscopy provide structural information about the designed superlattices. The observed Curie temperature of LBMO epi layers exhibits a strong correlation with lattice strain. All superlattices are coupled ferromagnetically at low temperature.
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