Magnetic and transport properties driven by lattice strain in La0.7Ca0.3MnO3∕BaTiO3 and La0.7Sr0.3MnO3∕BaTiO3 bilayer films
作者： V. G. Prokhorov , V. A. Komashko , G. G. Kaminsky , K. K. Yu , S. J. Jun
DOI: 10.1063/1.2409635
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摘要: The microstructure and the magnetic transport properties of La0.7Ca0.3MnO3 La0.7Sr0.3MnO3 films deposited on a BaTiO3 layer (LCMO/BTO LSMO/BTO) LaAlO3(001) single crystal (LCMO/LAO LSMO/LAO) by rf-magnetron sputtering using “soft” (or powder) targets are investigated. grown BTO demonstrate biaxial tensile in-plane compressive out-of-plane strains, while LAO, in contrast, manifest strains. with lattice strain undergo transition at higher temperature than that for case. This argues Mn–O–Mn bond-angle variation, controlled strain, plays more important role formation spin ordering attendant modification Mn–O bond length. It is shown inhomogeneity, expressed significant difference between field-cooled zero-field-cooled temperature-dependent magnet...
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