Magnetocaloric properties in (La,R)(Fe,Mn,Si)13H (R = Ce and Pr)—toward a better alloy design that results in a reduction in volume of permanent magnets and the establishment of long-term reliability in cooling systems
-
Published:2023-08-02
Issue:4
Volume:5
Page:044001
-
ISSN:2515-7655
-
Container-title:Journal of Physics: Energy
-
language:
-
Short-container-title:J. Phys. Energy
Author:
Fujita AsayaORCID,
Imaizumi Kaoru
Abstract
Abstract
The magnetocaloric effect (MCE) in La1−z
R
z
(Fe0.89−x
Mn
x
Si0.11)13H
y
max (R = Ce and Pr) is verified in view of correlation between alloying recipes such as selection of doping elements and fundamental physics that governs MCE. The Ce-doped specimen with z = 0.3 & x = 0.017 exhibits a peaky isothermal entropy change ΔS
M profile with a maximum value of 20 J kg−1 K under a field change of 0.8 T at the Curie temperature of 285 K. In contrast, the enlarged field dependence of the Curie temperature and diminished hysteresis results in the adiabatic temperature change ΔT
ad of 2.7 K under a field change of 0.8 T at the Curie temperature of 289 K for the Pr-doped specimen.
Funder
Japan Society for the Promotion of Science
Subject
Materials Chemistry,General Energy,Materials Science (miscellaneous)