Document Detail


Inverse barocaloric effect in the giant magnetocaloric La-Fe-Si-Co compound.
MedLine Citation:
PMID:  22186891     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Application of hydrostatic pressure under adiabatic conditions causes a change in temperature in any substance. This effect is known as the barocaloric effect and the vast majority of materials heat up when adiabatically squeezed, and they cool down when pressure is released (conventional barocaloric effect). There are, however, materials exhibiting an inverse barocaloric effect: they cool when pressure is applied, and they warm when it is released. Materials exhibiting the inverse barocaloric effect are rather uncommon. Here we report an inverse barocaloric effect in the intermetallic compound La-Fe-Co-Si, which is one of the most promising candidates for magnetic refrigeration through its giant magnetocaloric effect. We have found that application of a pressure of only 1 kbar causes a temperature change of about 1.5 K. This value is larger than the magnetocaloric effect in this compound for magnetic fields that are available with permanent magnets.
Authors:
Lluís Mañosa; David González-Alonso; Antoni Planes; Maria Barrio; Josep-Lluís Tamarit; Ivan S Titov; Mehmet Acet; Amitava Bhattacharyya; Subham Majumdar
Publication Detail:
Type:  Journal Article     Date:  2011-12-20
Journal Detail:
Title:  Nature communications     Volume:  2     ISSN:  2041-1723     ISO Abbreviation:  Nat Commun     Publication Date:  2011  
Date Detail:
Created Date:  2011-12-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101528555     Medline TA:  Nat Commun     Country:  England    
Other Details:
Languages:  eng     Pagination:  595     Citation Subset:  IM    
Affiliation:
Departament d'Estructura i Constituents de la Matèria. Facultat de Fı´sica. Universitat de Barcelona. Diagonal 645. Barcelona Knowledge Campus (BKC), 08028 Barcelona, Catalonia, Spain.
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