Abstract
We discuss a model nonfrustrated magnetoelectric in which a sufficiently strong magnetoelectric coupling produces an incommensurate magnetic order leading to ferroelectricity. Properties of the magnetoelectric in the magnetic field directed perpendicular to the wave vector describing the spin helix are considered in detail. Analysis of the classical energy shows that in contrast to the naive expectation, the onset of ferroelectricity occurs at a field H c1 that is lower than the saturation field H c2. We have H c1 = H c2 at large enough magnetoelectric coupling. We show that at H = 0, ferroelectricity occurs at T = T FE < T N. A qualitative discussion of the phase diagram in the H-T plane is presented within the mean-field approach.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
M. Fiebig, J. Phys. D: Appl. Phys. 38, R123 (2005).
S.-W. Cheong and M. Mostovoy, Nature Mater. 6, 13 (2007).
A. B. Harris and G. Lawes, cond-mat/0508617.
N. Aliouane, D. N. Argyriou, J. Strempfer, et al., Phys. Rev. B 73, 020102(R) (2006).
M. Kenzelmann, A. B. Harris, S. Jonas, et al., Phys. Rev. Lett. 95, 087206 (2005).
T. Kimura, G. Lawes, T. Goto, et al., Phys. Rev. B 71, 224425 (2005).
N. Hur, S. Park, P. A. Sharma, et al., Nature 429, 392 (2004).
L. C. Chapon, P. G. Radaelli, G. R. Blake, et al., Phys. Rev. Lett. 96, 097601 (2006).
G. R. Blake, L. C. Chapon, P. G. Radaelli, et al., Phys. Rev. B 71, 214402 (2005).
A. B. Harris, T. Yildirim, A. Aharony, and O. Entin-Wohlman, Phys. Rev. B 73, 184433 (2006).
M. Kenzelmann, A. B. Harris, A. Aharony, et al., Phys. Rev. B 74, 014429 (2006).
Y. Yamasaki, S. Miyasaka, Y. Kaneko, et al., Phys. Rev. Lett. 96, 207204 (2006).
K. Taniguchi, N. Abe, T. Takenobu, et al., Phys. Rev. Lett. 97, 097203 (2006).
T. Kimura, G. Lawes, and A. P. Ramirez, Phys. Rev. Lett. 94, 137201 (2005).
A. B. Harris, cond-mat/0610241.
M. Mostovoy, Phys. Rev. Lett. 96, 067601 (2006).
I. A. Sergienko and E. Dagotto, Phys. Rev. B 73, 094434 (2006).
H. Katsura, N. Nagaosa, and A. V. Balatsky, Phys. Rev. Lett. 95, 057205 (2005).
H. Katsura, A. V. Balatsky, and N. Nagaosa, Phys. Rev. Lett. 98, 027203 (2007).
Author information
Authors and Affiliations
Corresponding author
Additional information
The text was submitted by the author in English.
Rights and permissions
About this article
Cite this article
Syromyatnikov, A.V. A nonfrustrated magnetoelectric with incommensurate magnetic order in magnetic field. J. Exp. Theor. Phys. 105, 587–592 (2007). https://doi.org/10.1134/S1063776107090154
Received:
Issue Date:
DOI: https://doi.org/10.1134/S1063776107090154