Year: 2015
Type: article
Abstract: Eect of Pb substitution for Cu on magnetocaloric properties of Ni2Mn1-xCuxGa (x = 0.25, 0.27, 0.29) alloy was investigated experimentally.The magnetic measurements of Ni-Mn-Pb-Ga alloys conducted at low eld of 4kA/m (50 Oe) showed that their Curie points are above the room temperature (RT).The analysis of isothermal magnetic curves allowed the estimation of magnetic entropy change (∆SM).The highest calculated value of |∆SM|, ≈ 12 J/(kg K) and ≈ 1.8 J/(kg K), was registered for alloys containing 6.25 at.% of Cu and 6.75 at.% of Pb, respectively.The adiabatic temperature changes (∆T) measured near RT are ≈ 0.4 K.
Source: Acta Physica Polonica A
Authors: K. Sielicki, R. Wróblewski, M. Leonowicz
Institution: Warsaw University of Technology
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: diamond
Award: G8435550466
OpenAlex ID: W2014559136