Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/96642
Type: Artigo de periódico
Title: Theoretical Investigation On The Magnetocaloric Effect In Mnas Using A Microscopic Model To Describe The Magnetic And Thermal Hysteresis
Author: Alho B.P.
De Oliveira N.A.
De Sousa V.S.R.
Gama S.
Coelho A.A.
Carvalho A.M.G.
Von Ranke P.J.
Abstract: We report the thermal and magnetic hysteresis diagram for MnAs that comes from a microscopic description of a magnetic system through a model Hamiltonian that takes into account the magnetoelastic interaction. The temperature and magnetic hysteresis intervals are governed by the magnetoelastic interaction parameter, which leads to the energy barrier between stable and metastable minima in the exact free energy, obtained from our microscopic model. Application of the model to the MnAs first-order magnetic material, which presents high hysteresis effect, leads to a good agreement with the experimental magnetic and magnetocaloric data. © 2012 Elsevier Ltd. All rights reserved.
Editor: 
Rights: fechado
Identifier DOI: 10.1016/j.ssc.2012.03.028
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-84860286383&partnerID=40&md5=9d94c152930844f771be6d3b66f5d18a
Date Issue: 2012
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.