Abstract
The high-pressure (to 5 GPa) effect on the crystal and magnetic structures of the hexagonal manganite YMnO3 is studied by neutron diffraction in the temperature range 10–295 K. A spin-liquid state due to magnetic frustration on the triangular lattice formed by Mn ions is observed in this compound at normal pressure and T > T N = 70 K, and an ordered triangular antiferromagnetic state with the symmetry of the irreducible representation Γ1 arises at T < T N. The high-pressure effect leads to a spin reorientation of Mn magnetic moments and a change in the symmetry of the antiferromagnetic structure, which can be described by a combination of the irreducible representations Γ1 and Γ2. In addition, it is observed that the ordered magnetic moment of Mn ions decreases from 3.27 μB (5 GPa) to 1.52 μB (5 GPa) at T = 10 K and diffuse scattering is enhanced at temperatures close to T N. These effects can be explained within the model of the coexistence of the ordered antiferromagnetic phase and the spin-liquid state, whose volume fraction increases with pressure due to the enhancement of frustration effects.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
M. A. Gilleo, Acta Crystallogr. 10, 161 (1957).
H. L. Yakel, W. C. Koehler, E. F. Bertaut, et al., Acta Crystallogr. 16, 957 (1963).
T. Katsufuji, M. Masaki, A. Machida, et al., Phys. Rev. B 66, 134434 (2002).
E. F. Bertaut, M. Mercier, and R. Pauthenet, Phys. Lett. 5, 27 (1963).
J. E. Greedan, M. Bieringer, J. F. Britten, et al., J. Solid State Chem. 116, 118 (1995).
A. Munoz, J. A. Alonso, M. J. Martinez-Lope, et al., Phys. Rev. B 62, 9498 (2000).
J. Park, U. Kong, A. Pirogov, et al., Appl. Phys. A 74(Suppl.), S796 (2002).
J. Park, J.-G. Park, G. S. Jeon, et al., Phys. Rev. B 68, 104426 (2003).
W. C. Koehler, H. L. Yakel, E. O. Wollan, et al., Phys. Lett. 9, 93 (1964).
M. Fiebig, D. Fröhlich, K. Kohn, et al., Phys. Rev. Lett. 84, 5620 (2000).
A. Munoz, J. A. Alonso, M. J. Martinez-Lope, et al., Chem. Mater. 13, 1497 (2001).
Th. Lonkai, D. Hohlwein, J. Ihringer, et al., Appl. Phys. A 74(Suppl.), S843 (2002).
O. P. Vajk, M. Kenzelmann, J. W. Lynn, et al., Phys. Rev. Lett. 94, 087601 (2005).
J. Park, U. Kong, S. I. Choi, et al., Appl. Phys. A 74(Suppl.), S802 (2002).
V. L. Aksenov, A. M. Balagurov, V. P. Glazkov, et al., Physica B (Amsterdam) 265, 258 (1999).
V. P. Glazkov and I. N. Goncharenko, Fiz. Tekh. Vys. Davlenii 1, 56 (1991).
V. B. Zlokazov and V. V. Chernyshev, J. Appl. Cryst. 25, 447 (1992).
J. Rodriguez-Carvajal, Physica B (Amsterdam) 192, 55 (1993).
B. B. Van Aken and T. T. M. Palstra, Phys. Rev. B 69, 134113 (2004).
D. P. Kozlenko, Z. Jirák, I. N. Goncharenko, et al., J. Phys.: Condens. Matter 16, 5883 (2004).
D. P. Kozlenko, V. P. Glazkov, Z. Jirák, et al., J. Phys.: Condens. Matter 16, 2381 (2004).
D. P. Kozlenko, I. N. Goncharenko, B. N. Savenko, et al., J. Phys.: Condens. Matter 16, 6755 (2004).
R. Fieschi and F. G. Fumi, Nuovo Cimento 10, 865 (1953).
W. Nitsche and W. Kleemann, Phys. Rev. B 36, 8587 (1987).
Author information
Authors and Affiliations
Additional information
__________
Translated from Pis’ma v Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 82, No. 4, 2005, pp. 212–216.
Original Russian Text Copyright © 2005 by Kozlenko, Kichanov, Lee, Park, Glazkov, Savenko.
Rights and permissions
About this article
Cite this article
Kozlenko, D.P., Kichanov, S.E., Lee, S. et al. High-pressure effect on the crystal and magnetic structures of the frustrated antiferromagnet YMnO3 . Jetp Lett. 82, 193–197 (2005). https://doi.org/10.1134/1.2121813
Received:
Issue Date:
DOI: https://doi.org/10.1134/1.2121813