Search for alternative or reduced rare-earth content ferromagnetic materials for permanent magnet applications.

ORAL

Abstract

Current commercial magnets (e.g. Nd$_{2}$Fe$_{14}$B and SmCo$_{5}$) are based on critical rare-earth elements like Nd, Dy and Sm and the supply security of these materials is uncertain. Finding new ferromagnetic compounds without critical elements or reducing the content of critical rare-earth elements in existing rare-earth magnets without compromising in magnetic properties are the two possible routes to overcome the problem of criticality. In the first approach, we have synthesized the single crystals of the transition metal rich ternary ferromagnetic compounds: Mn$_{1.05}$Rh$_{0.02}$Bi, solid solution of (Fe$_{1-x}$Co$_{x}$)$_{2}$B, Fe$_{5}$B$_{2}$P, ZrMnP and HfMnP via flux growth technique and studied their magnetic anisotropic properties. In the second option we are exploring the possible routes for reducing the rare-earth content in commercial magnetic materials or finding non-critical rare-earth elements based ferromagnetic materials. In this talk we will review the progress we have made using each of these approaches.

*This research was supported by the Critical Material Institute, an Energy Innovation Hub funded by U.S. Department of Energy, Office of Energy Efficiency and Renewal Energy, Advanced Manufacturing Office.

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Authors

  • Tej Lamichhane

    • Iowa State Univ

  • Valentin Taufour

    • University of California, Davis
    • Ames Laboratory
    • Ames LabLaboratory

  • Morgan Masters

    • Iowa State Univ

  • Udhara Kaluarachchi

    • Iowa State Univ Ames Laboratory
    • Iowa State Univ
    • Iowa State University/ Ames LabLaboratory

  • Srinivasa Thimmaiah

    • Ames Laboratory

  • Andriy Palasyuk

    • Ames Laboratory

  • David Parker

    • Oak Ridge National Laboratory
    • Oak Ridge National Lab

  • Serguei Budko

    • Iowa State Univ Ames Laboratory
    • Iowa State Univ
    • $^A$Ames Laboratory US DOE, $^B$Department of Physics and Astronomy, $^C$Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA.
    • Ames Laboratory US DOE, and Department of Physics and Astronomy, Iowa State University, Ames, IA 50011, USA
    • Ames Laboratory, Dept. of Physics, ISU, Dept. of Physics, Washington University, St. Louis, ICQM, School of Physics, Peking University
    • Ames Laboratory and Dept. of Phys. and Astro., Iowa State University
    • Iowa State Univ and Ames Laboratory

  • Paul Canfield

    • Iowa State Univ Ames Laboratory
    • Ames Laboratory/ Iowa State University, Ames, IA 50011, USA
    • Iowa State Univ
    • $^A$Ames Laboratory US DOE, $^B$Department of Physics and Astronomy, $^C$Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA.
    • Iowa State University/ Ames LabLaboratory
    • Ames Lab
    • Ames Laboratory, Dept. of Physics and Astronomy, Iowa State University
    • Ames Laboratory and Dept. of Phys. and Astro., Iowa State University
    • Ames Laboratory and Department of Physics, Iowa State University, Ames, Iowa
    • Iowa State Univ and Ames Laboratory
    • Ames Lab and Department of Physics, Iowa State University, Ames, Iowa