Abstract

The advent of caloric materials for magnetocaloric, electrocaloric, and elastocaloric cooling is changing the landscape of solid state cooling technologies with potentials for high-efficiency and environmentally friendly residential and commercial cooling and heat-pumping applications. Given that caloric materials are ferroic materials that undergo first (or second) order phase transitions near room temperature, they open up intriguing possibilities for multiferroic devices with hitherto unexplored functionalities coupling their thermal properties with different fields (magnetic, electric, and stress) through composite configurations. Here we demonstrate a magneto-elastocaloric effect with ultra-low magnetic field (0.16 T) in a compact geometry to generate a cooling temperature change as large as 4 K using a magnetostriction/superelastic alloy composite. Such composite systems can be used to circumvent shortcomings of existing technologies such as the need for high-stress actuation mechanism for elastocaloric materials and the high magnetic field requirement of magnetocaloric materials, while enabling new applications such as compact remote cooling devices.

Details

Title
Ultra-low-field magneto-elastocaloric cooling in a multiferroic composite device
Author
Hou, Huilong 1 ; Finkel, Peter 2 ; Staruch, Margo 2 ; Cui, Jun 3 ; Takeuchi, Ichiro 1 

 Department of Materials Science and Engineering, University of Maryland, College Park, MD, USA 
 Materials Science and Technology Division, U.S. Naval Research Laboratory, Washington, DC, USA 
 Division of Materials Science and Engineering, Ames Laboratory, Ames, IA, USA; Department of Materials Science and Engineering, Iowa State University, Ames, IA, USA 
Pages
1-8
Publication year
2018
Publication date
Oct 2018
Publisher
Nature Publishing Group
e-ISSN
20411723
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2116412975
Copyright
© 2018. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.