Abstract
High-quality c -axis-oriented La 2 / 3 Sr 1 / 3 MnO 3 − δ (LSMO) films have been grown directly on Si(001) wafers by DC-magnetron sputtering without prechemical treatment of the substrate surface. The highly-oriented films have flat surface morphology and bean-like grains on the surface. It is suggested that self-assembly growth may be the intrinsic growth mechanism of these c -axis-oriented LSMO films on Si. The magnetic and electrical transport properties are measured and it is found that there exists a large low-field magnetoresistance (LFMR) over a wide temperature range down to 5 K, which is attributed to spin-dependent scattering at grain boundaries in the films.
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