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Abstract
A series of polycrystalline samples of Y3 M (M = Co, Ni, Rh, Pd, Ir, Pt), intermetallic binary compounds were synthesized by the arc-melting method. Powder x-ray diffraction (pXRD) confirmed the orthorhombic cementite-type crystal structure and allowed for the estimation of the lattice parameters. Physical properties were investigated by means of electrical resistivity and heat capacity measurements between 1.9 K and 300 K. All tested compounds show metallic-like behaviour with RRR values ranging from 1.3 to 8.3, and power-law $\rho \propto {{T}^{n}}$ temperature dependence of resistivity was observed, with $1.6\leqslant n\leqslant 2.2$ . No superconductivity was detected above 1.9 K. The Debye temperature, estimated from the low temperature heat capacity fit, ranged from 180 K (Y3Pt) to 222 K (Y3Co). The highest value of the Sommerfeld coefficient γ was found for Y3Pd (19.5 mJ mol−1 K−2). The pXRD pattern of Y3Rh indicated the presence of Y5Rh2, a previously unreported Pd5B2-type phase, whose unit cell parameters were refined using the LeBail method. Density functional theory calculations were performed and theoretical results revealed strong enhancement of the measured electronic specific heat, which was 30%–100% larger than computed. Quadratic temperature dependence of resistivity and enhanced electronic specific heat indicated a Fermi-liquid behavior of electrons in these materials.
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Authors (7)
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Bartłomiej Wiendlocha
- Faculty of Physics and Applied Computer Science, AGH University of Science and Technology -
Cite as
Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1088/2053-1591/aa6e8d
- License
- Copyright (2017 IOP Publishing Ltd)
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- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
Materials Research Express
no. 4,
edition 6,
pages 1 - 8,
ISSN: 2053-1591 - Language:
- English
- Publication year:
- 2017
- Bibliographic description:
- Strychalska-Nowak J., Wiendlocha B., Hołowacz K., Reczek P., Podgórski M., Winiarski M., Klimczuk T.: Fermi-liquid behavior of binary intermetallic compounds Y3 M (M = Co, Ni, Rh, Pd, Ir, Pt)// Materials Research Express. -Vol. 4, iss. 6 (2017), s.1-8
- DOI:
- Digital Object Identifier (open in new tab) 10.1088/2053-1591/aa6e8d
- Verified by:
- Gdańsk University of Technology
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