Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.authorAnand, Shashwat
dc.contributor.authorWaghmare, Umesh V.
dc.identifier.citationAnand, S; Waghmare, UV, Anomalies and synergy in the caloric effects of magnetoelectrics. Materials Research Express 2014, 1 (4), 45503
dc.identifier.citationMaterials Research Expressen_US
dc.descriptionRestricted Accessen_US
dc.description.abstractWe determine isothermal entropy changes (Delta S) associated with electrocaloric, magnetocaloric, and the corresponding multicaloric effects in a model type-I multiferroic system using Landau-Devonshire thermodynamic analysis. We show that (a) the magnetocaloric effect exhibits an unexpected anomaly at the ferroelectric transition occurring at a high temperature, even in the absence of magnetic ordering, and (b) the synergy between electro- and magnetocaloric effects leads to a significantly enhanced multicaloric effect (vertical bar Delta S-MultiCE vertical bar > vertical bar Delta S-ECE vertical bar + vertical bar Delta S-MCE vertical bar) over a wide temperature range when the difference in temperatures of magnetic and ferroelectric ordering (vertical bar Delta T-C vertical bar = vertical bar T-C(E) - T-C(M)vertical bar) is small. This result originate from the coupled thermal fluctuations of magnetic and electric order parameters. While the former is useful in detecting multiferroic materials from the measurements covering higher temperature transition alone, the latter augurs well for caloric applications of multiferroics.en_US
dc.publisherIoP Publishing Ltden_US
dc.rights@IoP Publishing Ltd, 2014en_US
dc.subjectMaterials Scienceen_US
dc.subjectMagnetocaloric Effecten_US
dc.subjectElectrocaloric Effecten_US
dc.subjectMagnetoelectric Couplingen_US
dc.titleAnomalies and synergy in the caloric effects of magnetoelectricsen_US
Appears in Collections:Research Articles (Umesh V. Waghmare)

Files in This Item:
File Description SizeFormat 
  Restricted Access
662.19 kBAdobe PDFView/Open Request a copy

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.