Magnetocaloric materials: From micro- to nanoscale

authors	Belo, JH; Pires, AL; Araujo, JP; Pereira, AM
nationality	International
journal	JOURNAL OF MATERIALS RESEARCH
author keywords	magnetic properties; nanoscale; microstructure
keywords	MAGNETIC PHASE-TRANSITION; HYDROGEN EVOLUTION REACTION; FIELD-INDUCED STRAINS; THIN-FILMS; MARTENSITIC-TRANSFORMATION; ENTROPY CHANGE; MAGNETOSTRUCTURAL TRANSITION; REFRIGERATION; GD; MAGNETORESISTANCE
abstract	Twenty one years ago, the discovery of the giant magnetocaloric effect (GMCE) at room temperature completely revolutionized the magnetocaloric materials field demonstrating the potential of magnetic refrigeration at room temperature and setting the beginning of a race for the best magnetocaloric material. Since then, hundreds of different bulk magnetic materials were studied in detail; however, only a small set of these exhibit GMCE. In the last ten years, the broad interest on these materials leads to the extension of their study to the micro- and nanoscale. In this review, we highlight the main motivations for exploring the size-reduction both from the technological and the purely scientific point of view and stress the general consequences on the magnetic and magnetocaloric properties. The emergence of different underlying mechanisms driving these effects will be identified with particular emphasis for the set of materials presenting GMCE.
publisher	CAMBRIDGE UNIV PRESS
issn	0884-2914
isbn	2044-5326
year published	2019
volume	34
issue	1
beginning page	134
ending page	157
digital object identifier (doi)	10.1557/jmr.2018.352
web of science category	Materials Science, Multidisciplinary
subject category	Materials Science
unique article identifier	WOS:000458504500012