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Microcharacterization of liquid delivery metalorganic chemical vapor deposition processed thin film materials exhibiting giant magnetoresistance

  • Journal of Materials Research
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Abstract

Thin films of La0.6Ca0.4MnO3 (LCMO) have been produced on (001) oriented LaAlO3 (LAO) and yttrium-stabilized zirconia (YSZ) substrates by liquid-delivery metalorganic chemical vapor deposition (LD-MOCVD). X-ray diffraction (XRD) analyses showed that the films were epitaxially grown on LAO substrates and were monocrystalline at a thickness of less than 500 Å. At a thickness of greater than 500 Å, the films became polycrystalline but maintained their high texture (preferred crystalline orientation). Films grown on YSZ were always polycrystalline but were also highly oriented. Regardless of the substrate, the 1500 Å thick polycrystalline films exhibited substantially significant magnetoresistance ratios even above room temperature.

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Authors and Affiliations

  1. Department of Mechanical Engineering, FAMU-FSU College of Engineering, Tallahassee, Florida, 32310-2175, USA

    M. L. Weaver, L. P. M. Brandao & H. Garmestani

  2. Department of Chemistry and MARTECH, Florida State University, Tallahassee, Florida, 32306-3006, USA

    E. S. Gillman & K. H. Dahmen

  3. Major Analytical Instrumentation Center, Department of Materials Science and Engineering, University of Florida, Gainesville, Florida, 32611-2066, USA

    A. Morrone

  4. Department of Metallurgical and Materials Engineering, University of Alabama, Tuscaloosa, Alabama, 35487-0202, USA

    M. L. Weaver

  5. Departmento de Eng. Mecanica e de Materiais, Instituto Militar de Engenharia, Rio de Janeiro, Brazil

    L. P. M. Brandao

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  1. M. L. Weaver
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  2. L. P. M. Brandao
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  3. H. Garmestani
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  4. E. S. Gillman
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  5. K. H. Dahmen
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  6. A. Morrone
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Weaver, M.L., Brandao, L.P.M., Garmestani, H. et al. Microcharacterization of liquid delivery metalorganic chemical vapor deposition processed thin film materials exhibiting giant magnetoresistance. Journal of Materials Research 14, 2007–2011 (1999). https://doi.org/10.1557/JMR.1999.0271

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  • DOI: https://doi.org/10.1557/JMR.1999.0271

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