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Multiple ordered phases in the filled skutterudite compound PrOs$_{4}$As$_{12}$

W. M. Yuhasz·N. P. Butch·T. A. Sayles·P. -C. Ho·J. R. Jeffries·T. Yanagisawa·N. A. Frederick·M. B. Maple·Z. Henkie·A. Pietraszko·S. K. McCall·M. W. McElfresh·M. J. Fluss
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Abstract

Magnetization, specific heat, and electrical resistivity measurements were made on single crystals of the filled skutterudite compound PrOs$_{4}$As$_{12}$. Specific heat measurements indicate an electronic specific heat coefficient $γ$ $\sim 50-200$ mJ/mol K$^{2}$ at temperatures 10 K $\leq T \leq 18$ K, and $\sim 1$ J/mol K$^{2}$ for $T \leq 1.6$ K. Magnetization, specific heat, and electrical resistivity measurements reveal the presence of two, or possibly three, ordered phases at temperatures below $\sim 2.3$ K and in fields below $\sim 3$ T. The low temperature phase displays antiferromagnetic characteristics, while the nature of the ordering in the other phase(s) has yet to be determined.

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W. M. Yuhasz, N. P. Butch, T. A. Sayles, P. -C. Ho, J. R. Jeffries, T. Yanagisawa, N. A. Frederick, M. B. Maple, Z. Henkie, A. Pietraszko, S. K. McCall, M. W. McElfresh, M. J. Fluss. 2006-03-07. Multiple ordered phases in the filled skutterudite compound PrOs$_{4}$As$_{12}$. https://doi.org/10.1103/physrevb.73.144409

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