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In-Depth Structural and Magnetic Characterizations of Fe and CrN Bilayer System

ORAL

Abstract

Iron and chromium nitride bilayer is an ideal system for exchange biasing and sensing applications as the Neel temperature of CrN is 280 K and Curie temperature of Fe 1043 K. For better growth and tunability of the bilayer, it is crucial to understand its crystal and magnetic structures in detail. In this project, we grow high quality epitaxial Fe/CrN bilayer thin films on MgO(001) by molecular beam epitaxy. All bilayers grow in 001 orientation on MgO(001) substrate with uniform layer thicknesses and sharp interfaces. Our data reveals the epitaxial relationship between Fe and CrN crystals and the magnetic structures of Fe and CrN. We found anisotropies of Fe and CrN are parallel to [110]MgO. We present a model that combines the crystal and magnetic structures of the Fe/CrN bilayer and fully explains all results.

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Presenters

  • Khan Alam

    Nanoscale and Quantum Phenomena Institute, Department of Physics and Astronomy, Ohio University, Physics Department, King Fahd University of Petroleum and Minerals, Department of Physics, King Fahd University of Petroleum and Minerals

Authors

  • Khan Alam

    Nanoscale and Quantum Phenomena Institute, Department of Physics and Astronomy, Ohio University, Physics Department, King Fahd University of Petroleum and Minerals, Department of Physics, King Fahd University of Petroleum and Minerals

  • Arthur Smith

    Ohio University, Department of Physics and Astronomy, Ohio University, Nanoscale and Quantum Phenomena Institute, Department of Physics and Astronomy, Ohio University

  • Kai Sun

    University of Michigan, University of Michigan - Ann Arbor, Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States

  • Andrew Foley

    Nanoscale and Quantum Phenomena Institute, Department of Physics and Astronomy, Ohio University, Department of Physics and Astronomy, Ohio University