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Anisotropic magnetic and superconducting properties of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mtext>CaFe</mml:mtext></mml:mrow><mml:mrow><mml:mn>2</mml:mn><mml:mo>−</mml:mo><mml:mi>x</mml:mi></mml:mrow></mml:msub><mml:msub><mml:mrow><mml:mtext>Co</mml:mtext></mml:mrow><mml:mi>x</mml:mi></mml:msub><mml:msub><mml:mrow><mml:mtext>As</mml:mtext></mml:mrow><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http…
We report on anisotropic dc magnetic susceptibility $\ensuremath{\chi}(T)$, electrical resistivity $\ensuremath{\rho}(T)$, and heat-capacity $C(T)$ measurements on the single crystals of ${\text{CaFe}}_{2\ensuremath{-}x}{\text{Co}}_{x}{\text{As}}_{2}$ for $x=0$ and 0.06. Large-sized single crystals were grown by the high-temperature solution method with Sn as the solvent. The spin-density wave (SDW)/structural transition observed at 170 K in …