- Tytuł:
- The Magnetic Entropy Changes in Pb Doped Ni-Mn-Cu-Ga Alloys
- Autorzy:
-
Sielicki, K.
Zygmuntowicz, J.
Wróblewski, R.
Leonowicz, M. - Powiązania:
- https://bibliotekanauki.pl/articles/354050.pdf
- Data publikacji:
- 2020
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
magnetocaloric effect
magnetic entropy change
Curie temperature
Heusler alloys - Opis:
- Effect of Pb addition on magnetocaloric properties of Ni50 Mn18,75 Cu6,25-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 entropychange (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.
- Źródło:
-
Archives of Metallurgy and Materials; 2020, 65, 2; 823-825
1733-3490 - Pojawia się w:
- Archives of Metallurgy and Materials
- Dostawca treści:
- Biblioteka Nauki
Artykuł