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New Co-Fe-N Magnetic Compounds Found Through Combined Computational and Experimental Methods

ORAL

Abstract

A combined search using computational and non-equilibrium cluster-deposition methods has been efficient in accelerating the discovery of new magnetic materials with high magnetocrystalline anisotropy K1, large saturation magnetic polarization Js, and high Curie Temperature Tc [1, 2]. Here we present the structure and magnetism of new compounds created by incorporating nitrogen and/or silicon in the interstitial or substitutional occupancies of Co, Fe, and FeCo. The search found a set of Fe-Co-N compounds having promising magnetic properties, including tetragonal Fe8Co8N2 that exhibits K1 = 16 Mergs/cm3, Js = 17.6 kG, and Tc ≈ 650 K. The prospects of new rare-earth magnetic compounds for energy and information storage applications will be discussed.
References
[1] B. Balasubramanian, M. Sakurai, C.-Z. Wang, X. Xu, K.-M. Ho, Chelikowsky, and D.J. Sellmyer Mol. Syst. Des. Eng., 5, 1098 (2020).
[2] M. Sakurai et al. Discovering rare-earth-free magnetic materials through the development of a database, Phys. Rev. Mater. (in press).

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Presenters

  • Balamurugan Balasubramanian

    Nebraska Center for Materials and Nanoscience and Department of Physics and Astronomy, University of Nebraska - Lincoln, Department of Physics and Astronomy and Nebraska Center for Materials and Nanoscience, University of Nebraska - Lincoln, University of Nebraska - Lincoln, Department of Physics and Astronomy, University of Nebraska-Lincoln

Authors

  • Balamurugan Balasubramanian

    Nebraska Center for Materials and Nanoscience and Department of Physics and Astronomy, University of Nebraska - Lincoln, Department of Physics and Astronomy and Nebraska Center for Materials and Nanoscience, University of Nebraska - Lincoln, University of Nebraska - Lincoln, Department of Physics and Astronomy, University of Nebraska-Lincoln

  • Rabindra Pahari

    Nebraska Center for Materials and Nanoscience and Department of Physics and Astronomy, University of Nebraska - Lincoln, Department of Physics and Astronomy and Nebraska Center for Materials and Nanoscience, University of Nebraska - Lincoln, University of Nebraska - Lincoln, Department of Physics and Astronomy, University of Nebraska-Lincoln

  • Cai-Zhuang Wang

    Ames Laboratory, U.S. Department of Energy and Department of Physics and Astronomy, Iowa State University, Iowa State University, Dept. of Physics and Astronomy, Iowa State University, Ames Laboratory and Iowa State University, Department of Physics, Iowa State University

  • Xiaoshan Xu

    Physics & Astronomy, University of Nebraska-Lincoln, Nebraska Center for Materials and Nanoscience and Department of Physics and Astronomy, University of Nebraska - Lincoln, University of Nebraska-Lincoln, University of Nebraska - Lincoln, Department of Physics and Astronomy, University of Nebraska - Lincoln, Physics and Astronomy, University of Nebraska-Lincoln

  • Kai-Ming Ho

    Ames Laboratory, U.S. Department of Energy and Department of Physics and Astronomy, Iowa State University, Iowa State University/AmesLab, Ames Laboratory and Iowa State University, Department of Physics, Iowa State University, Iowa State University

  • David J Sellmyer

    Nebraska Center for Materials and Nanoscience and Department of Physics and Astronomy, University of Nebraska - Lincoln, University of Nebraska-Lincoln, Department of Physics and Astronomy and Nebraska Center for Materials and Nanoscience, University of Nebraska - Lincoln, University of Nebraska - Lincoln, Department of Physics and Astronomy, University of Nebraska-Lincoln