Abstract

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.

Details

Title
The Magnetic Entropy Changes in Pb Doped Ni-Mn-Cu-Ga Alloys
Author
Sielicki, K; Zygmuntowicz, J; Wróblewski, R; Leonowicz, M
Pages
823-825
Publication year
2020
Publication date
2020
Publisher
Polish Academy of Sciences
ISSN
17333490
e-ISSN
23001909
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2650310037
Copyright
© 2020. This work is licensed under https://creativecommons.org/licenses/by-sa/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.