Multiferroicity in the Mixture of Orthorhombic and Hexagonal RMnO$_3$ (R=rare earths)

ORAL

Abstract

Orthorhombic perovskite RMnO$_3$ (R = Tb, Dr) shows an incommensurate magnetic/lattice modulation below $\sim $40 K and a lock-in transition below $\sim $25 k. The system becomes ferroelectric at the lock-in transition. On the other hand, hexagonal RMnO$_3$ (R = Ho-Lu, Y) exhibits ferroelectricity with a much higher transition temperature ($\approx $1000 K) and a magnetic ordering transition at $\sim $100 k. We will report the results of our comprehensive study of what happens when these two types of ferroelectric 113 compounds are mixed.

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Authors

  • Chenglin Zhang

    • Rutgers Center for Emergent Materials and Department of Physics \& Astronomy, Rutgers University, Piscataway, New Jersey 08854

  • Sabya Guha

  • Sang-Wook Cheong

    • Dept. of Physics \& Astronomy, Rutgers
    • Rutgers University, Department of Physics
    • Rutgers University
    • Rutgers University, USA
    • Rutgers Center for Emergent Materials and Department of Physics \& Astronomy, Rutgers University, Piscataway, New Jersey 08854
    • Rutgers Center for Emergent Materials