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Abstract
The crystal structure and elementary properties of La15NbxGe9 are reported. Single-crystal X-ray diffraction,from a crystallite with only 0.12 Nb/formula unit, reveals that this compound, although transition metal deficient, crystallizes in a hexagonal “15-1-9”-like structure type, space group P63mc (no. 186) with lattice parameters a = b = 15.5017(2) Å, c = 6.9173(2) Å. The physical properties were examined by specific heat and resistivity measurements. La15Nb0.4Ge9 shows metallic behavior, and no superconductivity is observed above 0.4 K. The Sommerfeld coefficient (γ = 62.41(8) mJ mol−1 K−2) and the Debye temperature (θD = 267(1) K) were estimated from a fit to the low temperature heat capacity data. La15Nb0.4Ge9 is the first reported compound in the ternary La-Nb-Ge system.
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Authors (5)
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Weiwei Xie
- Princeton University Department of Chemistry
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Robert J. Cava
- Louisiana State University Department of Chemistry
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- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
JOURNAL OF SOLID STATE CHEMISTRY
no. 265,
pages 50 - 54,
ISSN: 0022-4596 - Language:
- English
- Publication year:
- 2018
- Bibliographic description:
- Bławat J., Roman M., Xie W., Cava R. J., Klimczuk T.: La 15 Nb x Ge 9 : a superstructure of the Mn 5 Si 3 structure type with interstitial Nb atoms// JOURNAL OF SOLID STATE CHEMISTRY. -Vol. 265, (2018), s.50-54
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.jssc.2018.05.007
- Sources of funding:
- Verified by:
- Gdańsk University of Technology
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