Effect of the bath pH on the electrodeposition of nanocrystalline Pd-Co alloys and their magnetic properties

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dc.contributor.authorNoce, R. D.
dc.contributor.authorBarelli, Nilso [UNESP]
dc.contributor.authorSumodjo, P. T. A.
dc.contributor.authorCornejo, D. R.
dc.contributor.authorBenedetti, Assis Vicente [UNESP]
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:27:27Z
dc.date.available2014-05-20T15:27:27Z
dc.date.issued2006-11-11
dc.description.abstractThe effect of the bath pH on the electrodeposition of nanocrystalline Pd-Co alloys and on their magnetic properties was studied. The pH practically did not affect the alloy composition. Conversely, the pH showed a significant influence on the shape and size of crystallites. Two different crystallites morphology were observed depending on the bath pH. A crystallite size ranging from 18.2 to 30 nm was obtained from X-ray diffractometry (XRD) patterns using the Scherrer's method. Also from the XRD patterns the lattice strain percentage was calculated and correlated with the residual stress, which probably originated during the film electrodeposition on the substrate. Some alloy magnetic properties showed small variations. In contrast, high and unexpected coercivities were obtained reaching a maximum of 1.69 kOe at pH 5.5. The high coercivity values were attributed to the presence of residual stress at the film-substrate interface, which increased as the bath pH and crystallite size decrease, both of them contributing simultaneously to increase in coercivity. (C) 2006 Elsevier B.V. All rights reserved.en
dc.description.affiliationUniv São Paulo, Inst Quim, BR-05508900 São Paulo, Brazil
dc.description.affiliationUniv Estadual Paulista, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.description.affiliationUniv São Paulo, Inst Fis, BR-05508900 São Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.format.extent199-203
dc.identifierhttp://dx.doi.org/10.1016/j.jmmm.2006.02.244
dc.identifier.citationJournal of Magnetism and Magnetic Materials. Amsterdam: Elsevier B.V., v. 306, n. 2, p. 199-203, 2006.
dc.identifier.doi10.1016/j.jmmm.2006.02.244
dc.identifier.issn0304-8853
dc.identifier.urihttp://hdl.handle.net/11449/37434
dc.identifier.wosWOS:000240883500007
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofJournal of Magnetism and Magnetic Materials
dc.relation.ispartofjcr3.046
dc.relation.ispartofsjr0,786
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectPd-Co alloyspt
dc.subjectpH effectpt
dc.subjectmagnetic propertiespt
dc.titleEffect of the bath pH on the electrodeposition of nanocrystalline Pd-Co alloys and their magnetic propertiesen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.lattes1769008264876945[5]
unesp.author.orcid0000-0002-0243-6639[5]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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