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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2005, Volume 81, Issue 6, Pages 335–340
(Mi jetpl1701)
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This article is cited in 189 scientific papers (total in 189 papers)
CONDENSED MATTER
Magnetoelectric effects in gadolinium iron borate GdFe$_3$(BO$_3$)$_4$
A. K. Zvezdina, S. S. Krotovb, A. M. Kadomtsevab, G. P. Vorob'evb, Yu. F. Popovb, A. P. Pyatakovb, L. N. Bezmaternykhc, E. N. Popovab a General Physics Institute named after A. M. Prokhorov, Russian Academy of Sciences
b M. V. Lomonosov Moscow State University
c L. V. Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences
Abstract:
Magnetoelectric interactions have been investigated in a single crystal of gadolinium iron borate GdFe$_3($BO$_3)_4$, whose macroscopic symmetry is characterized by the crystal class 32. Using the results of this study, the interplay of magnetic and electric orderings occurring in the system has been experimentally revealed and theoretically substantiated. The electric polarization and magnetostriction of this material that arise in spin-reorientation transitions induced by a magnetic field have been investigated experimentally. For $H\|c$ and $H\perp c$, $H{-}T$ phase diagrams have been constructed, and a strict correlation between the changes in the magnetoelectric and magnetoelastic properties in the observed phase transitions has been ascertained. A mechanism of specific noncollinear antiferroelectric ordering at the structural phase transition point was proposed to interpret the magnetoelectric behavior of the system within the framework of the symmetry approach in the entire temperature range. This ordering provides the conservation of the crystal class of the system when the temperature decreases to the antiferroelectric ordering point. The expressions that have been obtained for the magnetoelectric and magnetoelastic energy describe reasonably well the behavior of gadolinium iron borate observed experimentally.
Received: 16.02.2005
Citation:
A. K. Zvezdin, S. S. Krotov, A. M. Kadomtseva, G. P. Vorob'ev, Yu. F. Popov, A. P. Pyatakov, L. N. Bezmaternykh, E. N. Popova, “Magnetoelectric effects in gadolinium iron borate GdFe$_3$(BO$_3$)$_4$”, Pis'ma v Zh. Èksper. Teoret. Fiz., 81:6 (2005), 335–340; JETP Letters, 81:6 (2005), 272–276
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