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2009 | 115 | 1 | 126-128
Article title

Heat Capacity Studies of NdNi_4Si Compound

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EN
Abstracts
EN
The study of the heat capacity of the intermetallic compound NdNi_{4}Si including the effect of the magnetic field is reported. This compound crystallizes in the hexagonal CaCu_5-type structure, space group P6/mmm. NdNi_{4}Si is ferromagnetic with T_C = 8 K and the saturation magnetic moment of 1.5 μ_{B}/f.u. at 4.2 K (in H = 9 T). The heat capacity was analyzed considering the electronic contribution, the Schottky anomaly, and the lattice contributions in the frames of the Debye model. The scheme of the energy levels created by the crystal electric field split is determined from the Schottky contribution to the specific heat. NdNi_{4}Si was characterized by the electronic heat capacity coefficient γ = 85 mJ/(mol K^2) and the Debye temperature Θp_D = 325 K.
Keywords
Contributors
author
  • Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland
author
  • Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 043 53 Košice, Slovakia
  • Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 043 53 Košice, Slovakia
author
  • Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland
author
  • Institute of Molecular Physics, Polish Academy of Sciences, M. Smoluchowskiego 17, 60-179 Poznań, Poland
author
  • Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 043 53 Košice, Slovakia
References
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  • 2. W.E. Wallace, Rare Earth Intermetallics, Ed. A.M. Alper, J.L. Margrave, A.S. Nowick, Academic Press, New York 1973, p. 266
  • 3. J.A. Blanco, D. Gignoux, D. Schmitt, A. Tari, F.Y. Zhang, J. Phys., Condens. Matter 6, 4335 (1994)
  • 4. A. Kowalczyk, M. Falkowski, V.H. Tran, M. Pugaczowa-Michalska, J. Alloys Comp. 440, 13 (2007)
  • 5. T. Toliński, W. Schäfer, W. Kockelmann, A. Kowalczyk, A. Hoser, Phys. Rev. B 68, 144403 (2003)
  • 6. T. Toliński, W. Schäfer, A. Kowalczyk, B. Andrzejewski, A. Hoser, A. Szlaferek, J. Alloys Comp. 385, 28 (2004)
  • 7. A. Tari, The Specific Heat of Master at Low Temperatures, Imperial College Press, London 2003, p. 150
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv115n1029kz
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