Structural and magnetic properties of Sc-doped rare earth ferrites

ORAL

Abstract

We have studied crystal structure and magnetic properties of Sc-doped rare earth ferrites R1-xScxFeO3 (R=Ho, Er, Yb). For R=Ho, pure structural phases, orthorhombic, garnet, and bixbyte, were observed for x=0, 0.5, and 1 respectively. Pure garnet phase was also found for x=0.5 and R=Er. In contrast, when x=0.5 and R=Yb, mixed phases dominated with hexagonal and garnet were observed. Magnetic properties of Ho0.5Sc0.5FeO3 show incomplete magnetic compensation, with a magnetization minimum at a temperature lower than the compensation temperature of the undoped Ho-Fe-O garnet. These results indicate that Sc atoms occupy both Fe and rare earth sites due to the intermediate atomic radius.

*This work was supported by the NSF DMR-1454618.

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Presenters

  • Xiaoshan Xu

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

Authors

  • Jason White

    • University of Nebraska - Lincoln

  • Kishan Sinha

    • University of Nebraska - Lincoln

  • Xiaoshan Xu

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