Use of conventional electrochemical techniques to produce crystalline FeRh alloys induced by Ag seed layer

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dc.contributor.authorNoce, R. D. [UNESP]
dc.contributor.authorBenedetti, Assis Vicente [UNESP]
dc.contributor.authorPassamani, E. C.
dc.contributor.authorKumar, H.
dc.contributor.authorCornejo, D. R.
dc.contributor.authorMagnani, M.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal do Espírito Santo (UFES)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionCentro Nacional de Pesquisa em Energia e Materiais (CNPEM)
dc.date.accessioned2014-05-27T11:29:29Z
dc.date.available2014-05-27T11:29:29Z
dc.date.issued2013-05-09
dc.description.abstractBy combining galvanic displacement and electrodeposition techniques, an ordered Fe20Rh80 structure deposited onto brass was investigated by X-ray diffractometry, Mössbauer spectroscopy and magnetization measurements. Mössbauer and X-ray diffraction analyses suggest that the Fe-Rh alloy directly electrodeposited onto brass displays a nanocrystalline state while a similar alloy deposited onto Ag/brass shows a faced centered cubic-like structure, with dendrites-like features. These results directly indicate that the presence of Ag seed layer is responsible for the Fe-Rh alloy crystallization process. In addition, room temperature Mössbauer data indicate firstly paramagnetic states for two Fe-species. In the dominant Fe-species (major fraction of the Mössbauer spectra), Fe atoms are situated at a cubic environment and it can be attributed to the γ-Fe20Rh80 alloy based on their hyperfine parameters. In the second species, Fe atoms are placed in a non-local symmetry, which can be related to Fe atoms at the grain boundaries or/and Fe small clusters. These Fe-clusters are in superparamagnetic state at room temperature, but they may be ordered below 45 K, as suggested by magnetization data. © 2013 Elsevier B.V. All rights reserved.en
dc.description.affiliationInstituto de Química Universidade Estadual Paulista UNESP, 14800-900 Araraquara, SP
dc.description.affiliationDepartamento de Física Universidade Federal Do Espírito Santo, 29075-910 Vitória, ES
dc.description.affiliationInstituto de Física Universidade de São Paulo USP, 05508-090 São Paulo, SP
dc.description.affiliationCentro Nacional de Pesquisa em Energia e Materiais (CNPEM), 13083-970 Campinas SP
dc.description.affiliationUnespInstituto de Química Universidade Estadual Paulista UNESP, 14800-900 Araraquara, SP
dc.format.extent37-42
dc.identifierhttp://dx.doi.org/10.1016/j.jallcom.2013.03.282
dc.identifier.citationJournal of Alloys and Compounds, v. 573, p. 37-42.
dc.identifier.doi10.1016/j.jallcom.2013.03.282
dc.identifier.issn0925-8388
dc.identifier.scopus2-s2.0-84877017838
dc.identifier.urihttp://hdl.handle.net/11449/75375
dc.identifier.wosWOS:000320585700008
dc.language.isoeng
dc.relation.ispartofJournal of Alloys and Compounds
dc.relation.ispartofjcr3.779
dc.relation.ispartofsjr1,020
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectAg seed layer
dc.subjectElectrodeposition
dc.subjectFeRh alloys
dc.subjectGalvanic displacement
dc.subjectAg seed layers
dc.subjectElectrochemical techniques
dc.subjectElectrodeposition technique
dc.subjectFe-Rh alloy
dc.subjectMagnetization measurements
dc.subjectSsbauer spectroscopies
dc.subjectSuperparamagnetic state
dc.subjectAtoms
dc.subjectBrass
dc.subjectDeposits
dc.subjectGrain boundaries
dc.subjectIron alloys
dc.subjectMagnetization
dc.subjectMolybdenum
dc.subjectRhodium
dc.subjectSilver alloys
dc.subjectSuperparamagnetism
dc.subjectX ray diffraction
dc.subjectX ray diffraction analysis
dc.subjectNanocrystalline alloys
dc.titleUse of conventional electrochemical techniques to produce crystalline FeRh alloys induced by Ag seed layeren
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
unesp.author.lattes1769008264876945[2]
unesp.author.orcid0000-0002-0243-6639[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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