ACTA

Thermomagnetic Properties of LaFe_11.0Co_0.8(Si_1-xAl_x)_1.2 (x=0, 0.6) Alloys

P. Gębara^a, P. Pawlik^a, I. Skorvanek^b, J. Marcin^b, K. Pawlik^a, A. Przybył^a, J.J. Wysłocki^a, M. Szwaja^a, K. Filipecka^a
^aInstitute of Physics, Częstochowa University of Technology, Armii Krajowej 19, 42-200 Częstochowa, Poland
^bInstitute of Experimental Physics SAS, Watsonova 47, 040 01 Košice, Slovakia

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In the present work, Curie temperature, refrigeration capacity and cooling power of the LaFe_11.0Co_0.8(Si_1-xAl_x)_1.2 (where x=0, 0.6) alloys, are investigated. The value of Curie temperature was found to be 280 and 290 K for x=0 and 0.6, respectively. The determined values of cooling power (RCP) and refrigeration capacity (RC) differ only slightly for both investigated alloys. The maximum values of RCP and RC obtained under the change of external magnetic field from 0 to 5 T are 433 J/kg (for x=0) and 290 J/kg (for x=0.6), respectively.

DOI: 10.12693/APhysPolA.126.166
PACS numbers: 75.30.Sg, 75.50.Bb