Spin-reorientation transitions in Er, Tm and Yb orthoferrites: magnetic and structural properties.

POSTER

Abstract

Magnetic and structural characteristics of ErFeO$_3$, TmFeO$_3$ and YbFeO$_3$ single crystals were studied over a wide temperature range. Magnetic measurements found that the spin-rotation transitions in all crystals are well described by the earlier proposed theory with no fitting parameters. Additionally, they have shown the absence of the magnetic compensation point in TmFeO$_3$, and a noticeable growth of the c-axis magnetization at low temperatures in TmFeO$_3$ and ErFeO$_3$. The X-ray measurements found no symmetry-lowering lattice distortions during the reorientation. Overall, the measurements cover a wide range of material parameters and demonstrate the generality of the modified mean field theory of the $\Gamma_4 \to \Gamma_{24} \to \Gamma_2$ orientation phase transitions in orthoferrites. // L. T. Tsymbal {\em et al.}, J. Appl. Phys {\bf 101}, 123919 (2007).

Authors

  • Ya. B. Bazaliy

    • University of South Carolina, Columbia SC, USA; Institute of Magnetism, National Academy of Science, Kyiv, Ukraine.
    • Leiden University, The Netherlands; University of South Carolina, Columbia, SC, USA; Institute of Magnetism, Kyiv, Ukraine

  • L. T. Tsymbal

    • O.Galkin Donetsk Physics and Technology Institute, National Academy of Science, Donetsk, Ukraine

  • V. N. Derkachenko

    • O.Galkin Donetsk Physics and Technology Institute, National Academy of Science, Donetsk, Ukraine

  • V. I. Kamenev

    • O.Galkin Donetsk Physics and Technology Institute, National Academy of Science, Donetsk, Ukraine

  • G. N. Kakazei

    • Instituto de Ciencia de Materiales de Madrid, CSIC, Madrid, Spain; Institute of Magnetism, National Academy of Science, Kyiv, Ukraine.

  • F. J. Palomares

    • Instituto de Ciencia de Materiales de Madrid, CSIC, Madrid, Spain.

  • P. E. Wigen

    • The Ohio State University
    • Ohio State University, Columbus OH, USA.