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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/126/05/1605-1613

    • Keywords

       

      Intermetallics; crystal growth; crystal structure; magnetism.

    • Abstract

       

      Sm3Ni5Al19 was obtained as large rod shaped single crystals from reactive aluminium flux. Single crystal X-ray diffraction suggests that Sm3Ni5Al19 crystallizes in the Gd3Ni5Al19 structure type, orthorhombic space group $Cmcm$ and lattice constants 𝑎 = 4.0974(1) Å, 𝑏 = 16.0172(6)Å and 𝑐 = 27.0774(10) Å. Sm3Ni5Al19 is a member of the Sm$_{2n+m}$Ni$_{4n+m}$Al$_{15n+4m}$ series with n = 1 and m = 1. The crystal structure of Sm3Ni5Al19 consists of SmNiAl4 and Sm2Al4Al15 slabs intergrown along the 𝑏-axis. Magnetic susceptibility data on Sm3Ni5Al19 confirms the paramagnetic nature with a complicated magnetic ordering below 18 K. The inverse susceptibility data follows modified Curie-Weiss law above 150 K with effective magnetic moment 1.3 $\mu_{\text{B}}$/Sm atoms suggests trivalent Sm atoms.

    • Author Affiliations

       

      Udumula Subbarao1 Aloke Kumar Ghosh1 Sumanta Sarkar1 Sebastian C Peter1

      1. New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore, 560064, India

    • Dates

       
      Published
      September 2014
      Manuscript received
      8 April 2014
      Manuscript revised
      26 May 2014
      Accepted
      6 June 2014

    • Supplementary Material

       

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