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dc.contributor.CRUESPUniversidade Estadual de Campinaspt_BR
dc.typeArtigo de periódicopt_BR
dc.titleInvestigation of the first-order metamagnetic transitions and the colossal magnetocaloric effect using a Landau expansion applied to MnAs compoundpt_BR
dc.contributor.authorCarvalho, AMGpt_BR
dc.contributor.authorCoelho, AApt_BR
dc.contributor.authorGama, Spt_BR
dc.contributor.authorGandra, FCGpt_BR
dc.contributor.authorvon Ranke, PJpt_BR
dc.contributor.authorde Oliveira, NApt_BR
unicamp.author.emailamcarvalho@inmetro.gov.brpt_BR
unicamp.authorCarvalho, A. Magnus G. Inst Nacl Metrol Normalizacao & Qualidade Ind, DIMAT, INMETRO, BR-25250020 Duque De Caxias, RJ, Brazilpt_BR
unicamp.authorCoelho, A. A. Gama, S. Gandra, F. C. G. Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP, Brazilpt_BR
unicamp.authorvon Ranke, P. J. de Oliveira, N. A. Univ Estado Rio De Janeiro, Inst Fis, BR-20550013 Rio De Janeiro, Brazilpt_BR
dc.subject.wosEntropy Changept_BR
dc.subject.wosTemperaturept_BR
dc.subject.wosPressurept_BR
dc.description.abstractWe have explored a simple Landau model to calculate magnetization isotherms considering magnetic hysteresis. The model parameters have been chosen to fit the magnetic and magnetocaloric data of MnAs compound. Experimental data show that there is a great difference between the isothermal variation of the entropy (S(T)) obtained from isotherms measured increasing and decreasing magnetic field. This great difference is reproduced theoretically. From the experimental and phenomenological isotherms, we calculated the S(T). From the theoretical entropy, we also obtained S(T), which does not present the colossal peak.pt
dc.relation.ispartofEuropean Physical Journal Bpt_BR
dc.relation.ispartofabbreviationEur. Phys. J. Bpt_BR
dc.publisher.cityNew Yorkpt_BR
dc.publisher.countryEUApt_BR
dc.publisherSpringerpt_BR
dc.date.issued2009pt_BR
dc.date.monthofcirculationMARpt_BR
dc.identifier.citationEuropean Physical Journal B. Springer, v. 68, n. 1, n. 67, n. 72, 2009.pt_BR
dc.language.isoenpt_BR
dc.description.volume68pt_BR
dc.description.issuenumber1pt_BR
dc.description.firstpage67pt_BR
dc.description.lastpage72pt_BR
dc.rightsfechadopt_BR
dc.rights.licensehttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0pt_BR
dc.sourceWeb of Sciencept_BR
dc.identifier.issn1434-6028pt_BR
dc.identifier.wosidWOS:000265308800006pt_BR
dc.identifier.doi10.1140/epjb/e2009-00083-9pt_BR
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)pt_BR
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)pt_BR
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ)pt_BR
dc.description.sponsorship1Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)pt_BR
dc.description.sponsorship1Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)pt_BR
dc.description.sponsorship1Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.date.available2014-11-17T03:09:31Z
dc.date.available2015-11-26T16:30:26Z-
dc.date.accessioned2014-11-17T03:09:31Z
dc.date.accessioned2015-11-26T16:30:26Z-
dc.description.provenanceMade available in DSpace on 2014-11-17T03:09:31Z (GMT). No. of bitstreams: 1 WOS000265308800006.pdf: 484599 bytes, checksum: 257d29029b8bb152c14bcf9673b7b1c5 (MD5) Previous issue date: 2009en
dc.description.provenanceMade available in DSpace on 2015-11-26T16:30:26Z (GMT). No. of bitstreams: 2 WOS000265308800006.pdf: 484599 bytes, checksum: 257d29029b8bb152c14bcf9673b7b1c5 (MD5) WOS000265308800006.pdf.txt: 26842 bytes, checksum: 19794642d93ca3e506015440ef8c2485 (MD5) Previous issue date: 2009en
dc.identifier.urihttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/60637pt_BR
dc.identifier.urihttp://www.repositorio.unicamp.br/handle/REPOSIP/60637
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/60637-
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