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  Field-Independent Features in the Magnetization and Specific Heat of Sm3Co4Ge13

Nair, H. S., Kumar, K. R., Sahu, B., Xhakaza, S. P., Mishra, P., Samal, D., et al. (2019). Field-Independent Features in the Magnetization and Specific Heat of Sm3Co4Ge13. Crystals, 9(6): 322, pp. 1-11. doi:10.3390/cryst9060322.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0004-7785-0 Version Permalink: http://hdl.handle.net/21.11116/0000-0004-7788-D
Genre: Journal Article

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 Creators:
Nair, Harikrishnan S.1, Author
Kumar, K. Ramesh1, Author
Sahu, Baidyanath1, Author
Xhakaza, Sindisiwe P.1, Author
Mishra, Pramita1, Author
Samal, Debkanta1, Author
Ghosh, Sarit K.1, Author
Sekhar, Biju R.1, Author
Strydom, André M.2, Author              
Affiliations:
1External Organizations, ou_persistent22              
2Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863462              

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 Abstract: The cubic intermetallic compound Sm3Co4Ge13 (space group Pm (3) over barn) possesses a cage-like structure composed of Ge and displays an antiferromagnetic transition at T-N approximate to 6 K in magnetization, M (T), specific heat, C-p (T) and in thermal conductivity, kappa(T). The magnetic transition at T-N is observed to be robust against applied magnetic fields up to 9 T. From the analysis of specific heat, a Sommerfeld coefficient gamma = 80(2) mJ/mol-Sm K-2 is estimated. The magnetic entropy released at T-N is estimated as lower than that of a doublet, R ln(2). A positive Seebeck coefficient is observed for the thermopower, S (T). Photoemission spectroscopy reveals distinct electronic character of the near-E-F valence band states arising out of Co(3d)-Sm(4 f) hybridization and Sm(4 f) electron correlation. The unusual field-independent features in magnetization, specific heat and electrical transport is an indication of the significant correlation between f and d wave functions.

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Language(s): eng - English
 Dates: 2019-06-252019-06-25
 Publication Status: Published in print
 Pages: -
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 Rev. Method: -
 Identifiers: ISI: 000473807200047
DOI: 10.3390/cryst9060322
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Title: Crystals
Source Genre: Journal
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Publ. Info: Basel, Switzerland : MDPI AG
Pages: - Volume / Issue: 9 (6) Sequence Number: 322 Start / End Page: 1 - 11 Identifier: ISSN: 2073-4352
CoNE: https://pure.mpg.de/cone/journals/resource/2073-4352