Abstract
The microstructure and magnetoresistance properties of polycrystalline bulk La 0.67Ca 0.33MnO 3 and a La 0.67Ca 0.33MnO 3 film produced on a LaAlO 3 (1 0 0) single-crystal substrate using the dip-coating method were investigated. X-ray powder diffraction indicated that both film and bulk samples have perovskite structure. Scanning electron microscope and X-ray results clearly indicated that a La 0.67Ca 0.33MnO 3 film was successfully produced using the dip-coating process. This film showed a metal–insulator transition at 269 K and a maximum magnetoresistance ratio (MR (%)) of 56% at 269 K and 6 T magnetic field.
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