Specific Heat of YbNi_4Si Compound

• Authors: M. Falkowski , A. Kowalczyk , T. Toliński
• Languages of publication: EN

Abstracts

EN

The specific heat of YbNi_4Si has been analyzed considering the electronic contribution and the lattice contributions in frames of the Debye model. Based on the specific heat measurements, the electronic specific heat coefficient γ = 25 mJ mol^{-1} K^{-2} and the Debye temperature θ_D = 320 K were derived. This small value shows that YbNi_4Si cannot be classified as a heavy fermion system. These studies are completed by magnetic susceptibility, X-ray photoemission spectroscopy, and electrical resistivity.

Keywords

EN

82.80.Pv; 65.40.Ba; 75.20.Hr

Discipline

• 75.20.Hr: Local moment in compounds and alloys; Kondo effect, valence fluctuations, heavy fermions(for Kondo effect and scattering mechanisms in electronic conduction, see 72.15.Qm and 72.10.Fk)
• 65.40.Ba: Heat capacity(for specific heat of magnetic materials, see 75.40.-s)
• 82.80.Pv: Electron spectroscopy (X-ray photoelectron (XPS), Auger electron spectroscopy (AES), etc.)

• Journal: Acta Physica Polonica A
• Year: 2008
• Volume: 113
• Issue: 2
• Pages: 641-644

Dates

published

2008-02

received

2007-05-07

Contributors

author

M. Falkowski

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland

author

A. Kowalczyk

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland

author

T. Toliński

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland

References

• 1. A. Kowalczyk, M. Falkowski, T. Toliński, G. Chełkowska, Solid State Commun. 139, 5 (2006)
• 2. M. Bouvier, P. Lethuillier, D. Schmitt, Phys. Rev. B 43, 13137 (1991)

Identifiers

DOI

10.12693/APhysPolA.113.641