Short-range and long-range magnetic ordering in alpha-CuV2O6статья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Magnetic properties bf the triclinic copper vanadate alpha-CuV2O6 with linear chains of edge-sharing CuO6 octahedra were studied by magnetic susceptibility and electron-spin-resonance measurements. The broad maxi mum of a magnetic susceptibility at T-M=44 K corresponding to the intrachain exchange interaction J=34 K indicates one-dimensional short-range magnetic ordering within the chains. Three-dimensional long-range antiferromagnetic ordering takes place at T-N=24 K, suggesting a rather large value for the interchain exchange interaction J perpendicular to similar to 16.5 K. The energy gap found in the antiferromagnetic resonance spectrum 76 GHz agrees with the spin-flop magnetic-field value of about 2.7 T. [S0163-1829(99)05825-7].