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arXiv · 0904.1813

Magnetic behavior of nano crystals of a spin-chain system, Ca3Co2O6: Absence of multiple steps in the low temperature isothermal magnetization

Niharika Mohapatra·Kartik K Iyer·Sitikantha D Das·B. A. Chalke·S. C. Purandare·E. V. Sampathkumaran
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Abstract

We report that the major features in the temperature dependence of dc and ac magnetization of a well-known spin-chain compound, Ca3Co2O6, which has been known to exhibit two complex magnetic transitions due to geometrical frustration (one near 24 K and the other near 10 K), are found to be qualitatively unaffected in its nano form synthesized by high-energy ball-milling. However, the multiple steps in isothermal magnetization - a topic of current interest in low-dimensional systems - known for the bulk form well below 10 K is absent in the nano particles. We believe that this finding will be useful to the understanding of the 'step' magnetization behavior of such spin-chain systems.

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Niharika Mohapatra, Kartik K Iyer, Sitikantha D Das, B. A. Chalke, S. C. Purandare, E. V. Sampathkumaran. 2009-04-11. Magnetic behavior of nano crystals of a spin-chain system, Ca3Co2O6: Absence of multiple steps in the low temperature isothermal magnetization. https://doi.org/10.1103/physrevb.79.140409

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