Search for new materials: phase spread alloy thin film fabrication and characterization

ORAL

Abstract

We use the phase spread alloy (PSA) method of fabricating compositionally heterogeneous thin films as an efficient way to produce and screen new, interesting materials (e.g. superconductors, magnetoresistive compounds, etc.). This method uses co-sputtering to deposit material with smoothly varying element concentration across a substrate. Both local and non-local probes are used to verify the composition of the sample. Using the La-Si-C system as an example, we perform x-ray fluorescence from a synchrotron source, x-ray diffraction from a lab source, atomic force microscopy, and infrared spectroscopy on one sample to verify the presence of different phases and their properties.

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Authors

  • Moses Marsh

    Department of Physics, University of California-San Diego, University of California, San Diego

  • Ali Basaran

    University of California, San Diego

  • Jose de la Venta

    Univ of California - San Diego, University of California, San Diego, University of California - San Diego

  • Omar Khatib

    University of California, San Diego

  • Oleg Shpyrko

    Department of Physics, University of California-San Diego, University of California, San Diego, Department of Physics, UC San Diego, University of California San Diego

  • Dmitri Basov

    UCSD, University of California, San Diego, University of California San Diego, Department of Physics, University of California, San Diego

  • Ivan Schuller

    Center for Advanced Nanoscience, University of California San Diego, Univ of California - San Diego, Department of Physics and Materials Science and Engineering and Center for Advanced Nanoscience, UCSD, La Jolla, CA, USA, University of California, San Diego, University of California - San Diego, Center for Advanced Nanoscience, UCSD