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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2003, Volume 78, Issue 9, Pages 1039–1042
(Mi jetpl2650)
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This article is cited in 9 scientific papers (total in 9 papers)
CONDENSED MATTER
Long-range magnetic order in quasi-one-dimensional NaCrSi$_2$O$_6$ and NaCrGe$_2$O$_6$ metal oxides
A. N. Vasilieva, O. L. Ignatchika, A. N. Sokolova, Z. Hiroib, M. Isobeb, Y. Uedab a M. V. Lomonosov Moscow State University
b The Institute for Solid State Physics, The University of Tokyo
Abstract:
Formation of a long-range magnetic order is observed at low temperatures in NaCrSi$_2$O$_6$ and NaCrGe$_2$O$_6$ quasi-one-dimensional metal oxide compounds with a pyroxene structure. The first of these compounds, NaCrSi$_2$O$_6$, is an antiferromagnet with the Neel temperature $T_N=3$ K, while the second, NaCrGe$_2$O$_6$, is a ferromagnet with the Curie temperature $T_C=6$ K. From the measurements of magnetization and specific heat of these compounds, the main parameters of their magnetic subsystems are determined. In NaCrSi$_2$O$_6$, a spin-flip transition is observed. A change in the type of magnetic order that accompanies the replacement of Si by Ge can be attributed to a change in the parameters of the competing direct antiferromagnetic Cr-Cr and indirect ferromagnetic Cr-O-Cr interactions in isolated chains of CrO$_6$ octahedra.
Received: 22.09.2003
Citation:
A. N. Vasiliev, O. L. Ignatchik, A. N. Sokolov, Z. Hiroi, M. Isobe, Y. Ueda, “Long-range magnetic order in quasi-one-dimensional NaCrSi$_2$O$_6$ and NaCrGe$_2$O$_6$ metal oxides”, Pis'ma v Zh. Èksper. Teoret. Fiz., 78:9 (2003), 1039–1042; JETP Letters, 78:9 (2003), 551–554
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https://www.mathnet.ru/eng/jetpl2650 https://www.mathnet.ru/eng/jetpl/v78/i9/p1039
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