Field-Independent Features in the Magnetization and Specific Heat of Sm3Co4Ge13
Department of Physics, University of Texas at El Paso, 500 W. University Ave, El Paso, TX 79968, USA
Highly Correlated Matter Research Group, Physics Department, University of Johannesburg, P. O. Box 524, Auckland Park 2006, South Africa
Institute of Physics, Sachivalaya Marg, Bhubaneswar 751005, India
Homi Bhabha National Institute, Anushakti Nagar, Mumbai 400085, India
Department of Applied Physics, Birla Institute of Technology, Mesra 835215, Ranchi, Jharkhand, India
Max Planck Institute for Chemical Physics of Solids (MPICPfS), Nöthnitzerstraße 40, 01187 Dresden, Germany
Author to whom correspondence should be addressed.
Received: 2 May 2019 / Revised: 7 June 2019 / Accepted: 10 June 2019 / Published: 25 June 2019
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The cubic intermetallic compound Sm
) possesses a cage-like structure composed of Ge and displays an antiferromagnetic transition at
6 K in magnetization,
, specific heat,
and in thermal conductivity,
. The magnetic transition at
is observed to be robust against applied magnetic fields up to 9 T. From the analysis of specific heat, a Sommerfeld coefficient
= 80(2) mJ/mol-Sm K
is estimated. The magnetic entropy released at
is estimated as lower than that of a doublet, R
ln(2). A positive Seebeck coefficient is observed for the thermopower,
. Photoemission spectroscopy reveals distinct electronic character of the near-
valence band states arising out of Co(
) hybridization and Sm(
) electron correlation. The unusual field-independent features in magnetization, specific heat and electrical transport is an indication of the significant correlation between f
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Nair, H.S.; Kumar, K.R.; Sahu, B.; Xhakaza, S.P.; Mishra, P.; Samal, D.; Ghosh, S.K.; Sekhar, B.R.; Strydom, A.M. Field-Independent Features in the Magnetization and Specific Heat of Sm3Co4Ge13. Crystals 2019, 9, 322.
Nair HS, Kumar KR, Sahu B, Xhakaza SP, Mishra P, Samal D, Ghosh SK, Sekhar BR, Strydom AM. Field-Independent Features in the Magnetization and Specific Heat of Sm3Co4Ge13. Crystals. 2019; 9(6):322.
Nair, Harikrishnan S.; Kumar, K. R.; Sahu, Baidyanath; Xhakaza, Sindisiwe P.; Mishra, Pramita; Samal, Debkanta; Ghosh, Sarit K.; Sekhar, Biju R.; Strydom, André M. 2019. "Field-Independent Features in the Magnetization and Specific Heat of Sm3Co4Ge13." Crystals 9, no. 6: 322.
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