Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/105818
Type: Artigo de periódico
Title: Irreversibility In Cooling And Heating Processes In The Magnetocaloric Mnas And Alloys
Author: Lima Sharma A.L.
Gama S.
Coelho A.A.
De Campos A.
Abstract: Irreversibility of adiabatic processes in the magnetocaloric MnAs and alloys is presented here. We used a differential scanning calorimeter to record the heat flux as a function of the temperature and applied field for MnAs (Mn, X)As, where X stands for Fe or Cu in 0.6% of doping. We extracted the latent heat and entropy in a cycle. In the cooling process, we observed that S Mn c > SFe c > S Cu c, and for the heating process, SFe h ≈ SMn h > SCu h. The difference in the entropy obtained between processes was found to be as high as 37%. © 2008 American Institute of Physics.
Editor: 
Rights: aberto
Identifier DOI: 10.1063/1.3058712
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-58149229130&partnerID=40&md5=56067c736454eeb097edfec08714870d
Date Issue: 2008
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
There are no files associated with this item.


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