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  Crystal, electronic structure and physical properties of U3Rh4Ge13 and Th2Rh3Ge5

Levytskyi, V., Svanidze, E., Leithe-Jasper, A., & Gumeniuk, R. (2022). Crystal, electronic structure and physical properties of U3Rh4Ge13 and Th2Rh3Ge5. Journal of Alloys and Compounds, 911: 165017, pp. 1-8. doi:10.1016/j.jallcom.2022.165017.

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 Creators:
Levytskyi, Volodymyr1, Author
Svanidze, Eteri2, Author              
Leithe-Jasper, Andreas3, Author              
Gumeniuk, Roman4, Author              
Affiliations:
1External Organizations, ou_persistent22              
2Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863405              
3Andreas Leithe-Jasper, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863406              
4Roman Gumeniuk, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863421              

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 Abstract: Crystal structures of U3Rh4Ge13 [structure type HT-Y3Pt4Ge13, space group R3c, a = 5.6004(6) Å, c = 15.5158(1) Å, RB = 0.022, Rp = 0.021] and of Th2Rh3Ge5 [structure type U2Co3Si5, space group Ibam, a = 10.0572(1) Å, b = 11.9142(1) Å, c = 6.0997(1) Å, RB = 0.027, RP = 0.037] are refined by powder X-ray diffraction method. Their structural relationships with primitive cubic Yb3Rh4Sn13 and body-centered tetragonal ThCr2Si2 types, respectively are discussed. The ac and dc magnetic susceptibility measurements on U3Rh4Ge13 revealed an antiferromagnetic ordering at TN = 22 K followed by a metamagnetic transition below 5 K. The magnetic entropy Smag ≈ Rln4 at TN indicates U3Rh4Ge13 to follow the classical LS coupling scheme. This finding together with the performed theoretical DFT calculations hint toward localized nature of 5f states in the studied germanide. U3Rh4Ge13 reveals metallic transport properties, low thermal conductivity (i.e. 0.4–0.6 W m−1 K−1) as well as displays a structural phase transition in the temperature range of 292–315 K. Electrical resistivity measurements and theoretical DFT calculations indicated Th2Rh3Ge5 to be a simple metal. © 2022 Elsevier B.V.

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Language(s): eng - English
 Dates: 2022-04-142022-04-14
 Publication Status: Published in print
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 Rev. Type: -
 Identifiers: DOI: 10.1016/j.jallcom.2022.165017
BibTex Citekey: Levytskyi2022
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Title: Journal of Alloys and Compounds
  Abbreviation : J. Alloy. Comp.
Source Genre: Journal
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Publ. Info: Lausanne, Switzerland : Elsevier B.V.
Pages: - Volume / Issue: 911 Sequence Number: 165017 Start / End Page: 1 - 8 Identifier: ISSN: 0925-8388
CoNE: https://pure.mpg.de/cone/journals/resource/954925567746