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Crystal structure and low-energy Einstein mode in ErV2Al20 intermetallic cage compound

Abstract

Single crystals of a new ternary aluminide ErV2Al20 were grown using a self-flux method. The crystal structure was determined by powder X-ray diffraction measurements and Rietveld refinement, and physical properties were studied by means of electrical resistivity, magnetic susceptibility and specific heat measurements. These measurements reveal that ErV2Al20 is a Curie-Weiss paramagnet down to 1.95 K with an effective magnetic moment μeff =9.27(1) μB and Curie-Weiss temperature ΘCW =−0.55(4) K. The heat capacity measurements show a broad anomaly at low temperatures that is attributed to the presence of a low-energy Einstein mode with characteristic temperature ΘE =44 K, approximately twice as high as in the isostructural ‘Einstein solid’ VAl10.1.

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Keywords

Details

Category:
Articles
Type:
artykuł w czasopiśmie wyróżnionym w JCR
Published in:
JOURNAL OF SOLID STATE CHEMISTRY no. 245, pages 10 - 16,
ISSN: 0022-4596
Language:
English
Publication year:
2017
Bibliographic description:
Winiarski M., Klimczuk T.: Crystal structure and low-energy Einstein mode in ErV2Al20 intermetallic cage compound// JOURNAL OF SOLID STATE CHEMISTRY. -Vol. 245, (2017), s.10-16
DOI:
Digital Object Identifier (open in new tab) 10.1016/j.jssc.2016.09.029
Verified by:
Gdańsk University of Technology

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