Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2004-05-27
Physics
Condensed Matter
Strongly Correlated Electrons
J. Solid State Chemistry, in press
Scientific paper
10.1016/j.jssc.2004.05.050
Heat-capacity (C) and ac susceptibility measurements have been performed on the spin-chain compounds, Sr3ZnRhO6 and Ca3NiMnO6, to establish their magnetic behavior and to explore whether there are magnetic frustration effects due to antiferromagnetic coupling of the chains arranged in a triangular fashion. While the paramagnetic Curie temperatures have been known to be large with a negative sign, as though antiferromagnetic interaction is very strong, the results establish that (i) the former apparently undergoes inhomogeneous magnetic ordering only around 15 K, however without spin-glass anomalies, and (ii) the latter orders antiferromagnetically at a relatively low temperature (17 K). Thus, the magnetic frustration manifests differently in these compounds.
Matsushita Yasuhiro
Rayaprol Sudhindra
Sampathkumaran E. V.
Sengupta Kausik
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