Microstructure and magnetoresistance of a La0.67Ca0.33MnO3 film produced using the dip-coating method

Authors :: M. Gunes
Selcuk Atalay
Veli Serkan Kolat
Turgay Seçkin
Sema Vural
H. I. Mutlu
H. Gencer
Source :: Materials Science and Engineering: B. 136:41-45
Publication Year :: 2007
Publisher :: Elsevier BV, 2007.
Abstract: The microstructure and magnetoresistance properties of polycrystalline bulk La0.67Ca0.33MnO3 and a La0.67Ca0.33MnO3 film produced on a LaAlO3 (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 La0.67Ca0.33MnO3 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.

Subjects :: Colossal magnetoresistance
Materials science
Magnetoresistance
Condensed matter physics
Scanning electron microscope
Mechanical Engineering
Substrate (electronics)
Condensed Matter Physics
Microstructure
Dip-coating
Mechanics of Materials
General Materials Science
Crystallite
Composite material
Powder diffraction

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