Abstract: A single-step process to prepare epitaxial nanocomposite La 0.7Sr 0.3MnO 3/La 2O 3 thin films formed by spontaneous phase separation using a chemical solution deposition is presented. High magnetic field and temperature dependences of magnetic, transport, and magneto-transport properties of the films were investigated. The relationship between the enhanced magnetoresistance and microstructure and chemical inhomogeneities of the films are discussed.

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