Abstract
The static and resonance properties of a quasi-two-dimensional antiferromagnet phase on a distorted triangular lattice of KFe(MoO4)2 have been experimentally studied. Magnetization curves exhibit features corresponding to the spin-flop transition in a collinear biaxial antiferromagnet and simultaneously show a magnetization plateau characteristic of a triangular spin structure. The magnetic resonance spectra also display absorption lines corresponding to the spin structures of both types. The experimental data are described in terms of a model comprising alternating weakly bound magnetic layers, in which the main two exchange integrals have different values. Below the Néel temperature (T N =2.5 K), some of these layers possess a collinear antiferromagnetic structure, while the other layers have a triangular or spiral structure.
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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. 80, No. 3, 2004, pp. 231–235.
Original Russian Text Copyright © 2004 by Svistov, Smirnov, Prozorova, Petrenko, Shapiro, Dem’yanets.
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Svistov, L.E., Smirnov, A.I., Prozorova, L.A. et al. On the possible coexistence of spiral and collinear structures in antiferromagnetic KFe(MoO4)2 . Jetp Lett. 80, 204–207 (2004). https://doi.org/10.1134/1.1808851
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DOI: https://doi.org/10.1134/1.1808851