Magnetic anisotropy and magnetic moment of pure CeCo5 with respect to U (eV) and orbital polarization (OP) correction (grey-shaded)

Enhancing magnetic properties

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Magnetic anisotropy and magnetic moment of pure CeCo5 with respect to U (eV) and orbital polarization (OP) correction (grey-shaded)
Magnetic anisotropy and magnetic moment of pure CeCo5 with respect to U (eV) and orbital polarization (OP) correction (grey-shaded)

CMI researchers at Ames Laboratory conducted the research for this CMI highlight

Achievement
Improved intrinsic magnetic properties in CeCo5 were demonstrated from first principles calculations via low concentration Cu and Fe substitution.

Significance and impact
Higher-performing, critical element-lean permanent magnets offer alternatives to neo-magnets in applications ranging from electric vehicles and wind turbines to consumer electronics.

Details and next steps

  • Advanced ab-initio calculations show that 10% Cu can stabilize 20% Fe replaced for the Co to enhance magnetic moment in Ce (Co,Fe,Cu)5, while lowering materials cost.
  • Addition of 3d electrons via site substitution engineering helps chemically stabilize compositions