The Anisotropy of the Electrical Resistivity and Thermal Expansion of Single Crystal DyNi5

E. Kačmarčikováa, M. Reiffersa, M. Mihálika, J. Kováča, A. Menovskyb, J. Garcia Soldevillac, A. Señas Parientec and J.C. Goméz Salc a Institute of Experimental Physics, Watsonova 47, 043 53 Košice, Slovakia b Van der Waals-Zeeman Institute, University of Amsterdam, 1018 XE Amsterdam, Netherland c CITYMAC, Facultad de Ciencias, Universidad de Cantabria, 39005 Santander, Spain

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The results of the measurements of temperature dependence of the electrical resistivity ρ(T), thermal expansion L(T) and susceptibility χ(T) on single crystal DyNi5 in the temperature range 4.2-300 K are reported. The maximum in ρ(T) at TN=12.2 K was observed which corresponds to the transition to antiferromagnetically ordered state. Taking into account the Bloch-Grüneisen formula for electron-phonon contribution ρph(T) to ρ(T) the anisotropic magnetic contribution ρmag(T) was determined. We also observed the anisotropic behaviour of L(T) at low temperatures.

DOI: 10.12693/APhysPolA.97.811 PACS numbers: 72.15.Eb, 65.70.+y, 71.70.Gm