Low-dimensional magnetism of spin-1/2 chain systems of alpha- and beta-TeVO4: A comparative study

We present a comparative study of the low-dimensional compounds alpha- and beta-TeVO4. Our data clearly show that the change in the local coordination geometry of V4+ ions between alpha- and beta-TeVO4 leads to drastic differences in their magnetic properties. Despite sharing the same crystal structure, the two compounds manifest different magnetic exchange topologies. Both compounds exhibit a transition from ferro-to anti-ferromagnetic correlations with decreasing temperature. This effect, however, is driven by different mechanisms in the two compounds. In addition, dimensional crossover is found in beta-TeVO4. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4734010]


Published in:
Low Temperature Physics, 38, 7, 559-569
Year:
2012
Publisher:
Melville, Amer Inst Physics
ISSN:
1063-777X
Laboratories:




 Record created 2013-02-27, last modified 2018-09-13


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