Abstract
The spins of Ru5+ ions in Sr2YRuO6 form a face-centered cubic lattice with antiferromagnetic nearest neighbor interaction J≈25 meV. The antiferromagnetic structure of the first type experimentally observed below the Néel temperature T N =26 K corresponds to four frustrated spins of 12 nearest neighbors. In the Heisenberg model in the spin-wave approximation, the frustrations already cause instability of the antiferromagnetic state at T=0 K. This state is stabilized by weak anisotropy D or exchange interaction I with the next-nearest neighbors. Low D/J∼I/J∼10−3 values correspond to the experimental T N and sublattice magnetic moment values.
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Translated from Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l}\) Fiziki, Vol. 123, No. 6, 2003, pp. 1278–1285.
Original Russian Text Copyright © 2003 by Kuz’min, Ovchinnikov, Singh.
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Kuz’min, E.V., Ovchinnikov, S.G. & Singh, D.J. Frustrated antiferromagnetism in the Sr2YRuO6 double perovskite. J. Exp. Theor. Phys. 96, 1124–1130 (2003). https://doi.org/10.1134/1.1591224
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DOI: https://doi.org/10.1134/1.1591224