TY - JOUR N2 - Effect of Pb addition on magnetocaloric properties of Ni50Mn18,75Cu6,25-aPbaGa25 (a = 1, 2, 3, 4, 5) alloys was investigated experimentally. The magnetic measurements conducted at low field of 4 kA/m showed that addition of Pb led to separation of the both transformation temperatures and significantly shifted the structural transition effect towards lower temperatures as well as increased the Curie temperature. The analysis of isothermal magnetic curves allowed for the calculation of magnetic entropy change (ΔSM). Although the peak values of |ΔSM| for alloys containing 4 and 5 at.% Pb, ~3 J/(kg*K) and ~1.5 J/(kg*K) respectively, are low they stretch over the structural transformation and Curie temperature, and are at least 30 K wide at half maximum height. L1 - http://czasopisma.pan.pl/Content/116064/PDF/AMM-2020-2-41-Zygmuntowicz.pdf L2 - http://czasopisma.pan.pl/Content/116064 PY - 2020 IS - No 2 EP - 825 DO - 10.24425/amm.2020.132827 KW - magnetocaloric effect KW - magnetic entropy change KW - Curie temperature KW - Heusler alloys A1 - Sielicki, K. A1 - Zygmuntowicz, J. A1 - Wróblewski, R. A1 - Leonowicz, M. PB - Institute of Metallurgy and Materials Science of Polish Academy of Sciences PB - Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences VL - vol. 65 DA - 2020.05.08 T1 - The Magnetic Entropy Changes in Pb Doped Ni-Mn-Cu-Ga Alloys SP - 823 UR - http://czasopisma.pan.pl/dlibra/publication/edition/116064 T2 - Archives of Metallurgy and Materials ER -