Guoa, L., Lovell, E., Tang, Q., Boldrin, D. C. , Tang, C. C., Day, S. J., Cohen, L. F. and Ryan, M. P. (2020) Fine control of Curie temperature of magnetocaloric alloys La(Fe,Co,Si)13 using electrolytic hydriding. Scripta Materialia, 175, pp. 33-37. (doi: 10.1016/j.scriptamat.2019.08.017)
Text
219539.pdf - Accepted Version Available under License Creative Commons Attribution Non-commercial No Derivatives. 307kB |
Abstract
This work demonstrates precision control of hydrogen content in La(Fe,Co,Si)13Hδ for the development of environmentally friendly magnetocaloric-based cooling technologies, using an electrolytic hydriding technique. We show the Curie temperature, a critical parameter which directly governs the temperature window of effective cooling, can be varied easily and reproducibly in 1 K steps within the range 274 K to 402 K. Importantly, both partially (up to 10%) and fully hydrided compositions retain favorable entropy change values comparable to that of the base composition. Crucially, we show in these second-order phase transition compounds, partial hydriding is stable and not susceptible against phase separation.
Item Type: | Articles |
---|---|
Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Boldrin, Dr David |
Authors: | Guoa, L., Lovell, E., Tang, Q., Boldrin, D. C., Tang, C. C., Day, S. J., Cohen, L. F., and Ryan, M. P. |
College/School: | College of Science and Engineering > School of Physics and Astronomy |
Journal Name: | Scripta Materialia |
Publisher: | Elsevier |
ISSN: | 1359-6462 |
ISSN (Online): | 1872-8456 |
Published Online: | 04 October 2020 |
Copyright Holders: | Copyright © 2020 Elsevier |
First Published: | First published in Scripta Materialia 175:33-37 |
Publisher Policy: | Reproduced in accordance with the copyright policy of the publisher |
University Staff: Request a correction | Enlighten Editors: Update this record