ACTA

Magnetic Properties of Dy₁₁Si₄In₆

D. Duraj^a, S. Baran^b, T. Jaworska-Gołąb^b, Ya.M. Kalychak^c, J. Przewoźnik^d, A. Szytuła^b and Yu. Tyvanchuk^c
^aInstitute of Physics, Technical University of Cracow, Podchorążych 1, 30-084 Kraków, Poland
^bM. Smoluchowski Institute of Physics, Jagiellonian University, W.S. Reymonta 4, 30-059 Kraków, Poland
^cInorganic Chemistry Department, Ivan Franko National University of Lviv, Kyryla and Mephodiya Str. 6, 79005 Lviv, Ukraine
^dFaculty of Physics and Applied Computer Science, AGH University of Science and Technology, al. A. Mickiewicza 30, 30-059 Kraków, Poland

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Magnetic and specific heat measurements of Dy₁₁Si₄In₆ are reported. This compound crystallizes in the tetragonal Sm₁₁Ge₄In₆-type crystal structure (space group I4/mmm), in which Dy atoms occupy four different sites. The AC and DC magnetic measurements suggest complex magnetic properties. Below T_c = 52 K magnetic ordering has a ferromagnetic component, while below 20 K a change of the properties is observed. Near the Curie temperature the magnetocaloric effect with the magnetic entropy change ΔS_m equal to 16.5 J/(kg K) is observed. The specific heat data indicate only the phase transition at 52 K.

DOI: 10.12693/APhysPolA.121.1118
PACS numbers: 75.30.Kz, 75.40.-s, 75.40.Gb, 65.40.gd