Polar Behavior in a Magnetic Oxide Via A-Site Size Disorder

ORAL

Abstract

Density functional calculations are used to test a new mechanism for ferroelectricity in magnetic perovskites based on A-site size disorder. Calculations of the structure and magnetic ordering of (La,Lu)MnNiO$_6$ show that this mechanism is effective for this material, which is predicted to be both polar (ferroelectric or relaxor) and ferromagnetic, depending on the Lu concentration.

*Work supported by DOE, DMS\&E.

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Authors

  • D.J. Singh

    • ORNL
    • Materials Science \& Technology Division and Center for Radiation Detection Materials and Systems, Oak Ridge National Laboratory
    • Oak Ridge National Laboratory

  • Chul Hong Park

    • Pusan National University