• Structure and properties of SmCu$_{6−x}$In$_{6+x}$ (𝑥 = 0, 1, 2)

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      https://www.ias.ac.in/article/fulltext/jcsc/125/06/1315-1323

    • Keywords

       

      Rare earth intermetallics; crystallography; magnetism; single-crystal growth; resistivity.

    • Abstract

       

      High quality single crystals of SmCu6In6 were obtained from the reactions run in excess liquid indium and characterized by means of single crystal X-ray diffraction data. SmCu6In6 crystallizes in the YCu6In6 structure type, tetragonal space group $I4/mmm$ and lattice constants are 𝑎 = 𝑏 = 9.2036$(3) Å and 𝑐 = 5.4232(3) Å. SmCu$_{6−x}$In$_{6+x}$ (𝑥 = 0, 1, 2) compounds were obtained using arc melting and characterized using powder X-ray diffraction. Magnetic susceptibility data follow modified Curie-Weiss law behaviour above 50K and the experimentally measured magnetic moment values in SmCu4In8, SmCu5In7 and SmCu6In6 are 0.83 $\mu_B$, 1.45 $\mu_B$ and 0.90 $\mu_B$ per Sm atom, respectively. SmCu5In7 and SmCu6In6 compounds show antiferromagnetic ordering at $T_N = 7.8$ K, and no magnetic ordering was observed for SmCu4In8 down to 2 K. Electrical resistivity measurements show that all compounds are of metallic nature.

    • Author Affiliations

       

      Udumula Subbarao1 Sebastian C Peter1

      1. New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560 064, India
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  • Journal of Chemical Sciences | News

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