Journal Title
Title of Journal: J Chem Sci
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Abbravation: Journal of Chemical Sciences
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Authors: UDUMULA SUBBARAO SEBASTIAN C PETER
Publish Date: 2013/12/24
Volume: 125, Issue: 6, Pages: 1315-1323
Abstract
High quality single crystals of SmCu6In6 were obtained from the reactions run in excess liquid indium and characterized by means of single crystal Xray diffraction data SmCu6In6 crystallizes in the YCu6In6 structure type tetragonal space group I4/mmm and lattice constants are a = b = 920363 Å and c = 542323 Å SmCu6 − xIn6 + x x = 0 1 2 compounds were obtained using arc melting and characterized using powder Xray diffraction Magnetic susceptibility data follow modified Curie–Weiss law behaviour above 50 K and the experimentally measured magnetic moment values in SmCu4In8 SmCu5In7 and SmCu6In6 are 083 μ B 145 μ B and 090 μ B per Sm atom respectively SmCu5In7 and SmCu6In6 compounds show antiferromagnetic ordering at T N = 78 K and no magnetic ordering was observed for SmCu4In8 down to 2 K Electrical resistivity measurements show that all compounds are of metallic natureSingle phase SmCu6–xIn6–x x = 0 1 and 2 samples were synthesized using high frequency heat treatment The compounds were crystallized in the YCu6In6 structure type Physical properties of the SmCu6–xIn6+x x = 0 1 and 2 compounds have shown strong dependence on the copper to indium ratioWe thank Prof C N R Rao for his support and guidance Financial support from the Jawaharlal Nehru Centre for Advanced Scientific Research JNCASR the Department of Science and Technology New Delhi DST Grant SR/S2/RJN24/2010 and Sheikh Saqr Laboratory JNCASR Bangalore is gratefully acknowledged US thanks the Council of Scientific and Industrial Resources CSIR New Delhi for research fellowship SCP thanks the DST for Ramanujan fellowship We also thank Mr Rana Mr Bharat and Ms Selvi for various measurements
Keywords:
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