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

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorNoce, R. D.
dc.creatorBenedetti, Assis Vicente
dc.creatorPassamani, E. C.
dc.creatorKumar, H.
dc.creatorCornejo, D. R.
dc.creatorMagnani, M.
dc.date2014-05-27T11:29:29Z
dc.date2016-10-25T18:48:21Z
dc.date2014-05-27T11:29:29Z
dc.date2016-10-25T18:48:21Z
dc.date2013-05-09
dc.date.accessioned2017-04-06T02:23:41Z
dc.date.available2017-04-06T02:23:41Z
dc.identifierJournal of Alloys and Compounds, v. 573, p. 37-42.
dc.identifier0925-8388
dc.identifierhttp://hdl.handle.net/11449/75375
dc.identifierhttp://acervodigital.unesp.br/handle/11449/75375
dc.identifier10.1016/j.jallcom.2013.03.282
dc.identifierWOS:000320585700008
dc.identifier2-s2.0-84877017838
dc.identifierhttp://dx.doi.org/10.1016/j.jallcom.2013.03.282
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/896121
dc.descriptionBy 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.
dc.languageeng
dc.relationJournal of Alloys and Compounds
dc.rightsinfo:eu-repo/semantics/closedAccess
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 layer
dc.typeOtro


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