Magnetic behavior of the spin-chain compounds,Ca3CuIrO6 and Ca3CuRhO6
S. Rayaprol, E.V. Sampathkumaran
TL;DR
This study investigates the complex magnetic behavior of Ca3CuIrO6 and Ca3CuRhO6 spin-chain compounds, revealing magnetic ordering near 15 K and indications of spin-glass behavior, with topological effects influencing their magnetism.
Contribution
It provides new insights into the magnetic properties of Ca3CuIrO6 and Ca3CuRhO6, highlighting the role of topological effects and the similarity in magnetic behavior despite chemical substitution.
Findings
Magnetic ordering near 15 K in both compounds
Presence of spin-glass components suggested
Similar magnetic properties despite chemical substitution
Abstract
The spin-chain compounds, Ca3CuIrO6 and Ca3CuRhO6, crystallizing in a K4CdCl6-derived monoclinic structure, are investigated by ac and dc magnetization, isothermal remnant magnetization as well as heat capacity measurements. The results reveal the existence of a magnetic ordering in the vicinity of 15 K for both the compounds, but the transition appears to be of a complex nature. The existence of a spin-glass component is strongly indicated by the results. We propose that topological effects play a role on magnetism of these compounds. The magnetic properties for these two compounds are interestingly similar as though isoelectronic chemical substitution at the octahedral coordination site does not significantly interfere in the magnetic exchange process.
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