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Abstract
Single crystals of the new Ga-rich phases ReGa~5(Sn), ReGa~5(Pb) and ReGa~5(Bi) were successfully obtained from the flux method. The new tetragonal phases crystallize in the space group P4/mnc (No. 128) with vertex-sharing capped Re2@Ga14 oblong chains. Vacancies were discovered on the Ga4 and Ga5 sites, which can be understood as the direct inclusion of elemental Sn, Pb and Bi into the structure. Heat capacity measurements were performed on all three compounds resulting in a small anomaly which resembles the superconductivity transition temperature from the impurity ReGa5 phase. The three compounds were not superconducting above 1.85 K. Subsequently, electronic structure calculations revealed a high density of states around the Fermi level, as well as non-bonding interactions that likely indicate the stability of these new phases.
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Authors (5)
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Madalynn Marshall
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Ranuri S. Dissanayaka Mudiyanselage
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Weiwei Xie
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- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
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Crystals
no. 9,
ISSN: 2073-4352 - Language:
- English
- Publication year:
- 2019
- Bibliographic description:
- Marshall M., Górnicka K., Mudiyanselage R. S. D., Klimczuk T., Xie W.: New Tetragonal ReGa5(M) (M = Sn, Pb, Bi) Single Crystals Grown from Delicate Electrons Changing// Crystals -Vol. 9,iss. 10 (2019), s.527-
- DOI:
- Digital Object Identifier (open in new tab) 10.3390/cryst9100527
- Verified by:
- Gdańsk University of Technology
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