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Please use this identifier to cite or link to this item: http://acervodigital.unesp.br/handle/11449/25371
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dc.contributor.authorVaranda, L. C.-
dc.contributor.authorJafelicci, M.-
dc.contributor.authorImaizumi, M.-
dc.date.accessioned2014-05-20T14:17:55Z-
dc.date.accessioned2016-10-25T17:40:13Z-
dc.date.available2014-05-20T14:17:55Z-
dc.date.available2016-10-25T17:40:13Z-
dc.date.issued2007-06-15-
dc.identifierhttp://dx.doi.org/10.1063/1.2747209-
dc.identifier.citationJournal of Applied Physics. Melville: Amer Inst Physics, v. 101, n. 12, 5 p., 2007.-
dc.identifier.issn0021-8979-
dc.identifier.urihttp://hdl.handle.net/11449/25371-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/25371-
dc.description.abstractTemperature dependence and uniaxial magnetocrystalline anisotropy properties of the chemically synthesized 4 nm L1(0)-Fe55Pt45 nanoparticle assembly by a modified polyol route are reported. As-prepared nanoparticles are superparamagnetic presenting fcc structure, and annealing at 550 degrees C converts the assembly into ferromagnetic nanocrystals with large coercivity (H-C>1 T) in an L1(0) phase. Magnetic measurements showed an increasing in the ferromagnetically ordered fraction of the nanoparticles with the annealing temperature increases, and the remanence ratio, S=M-R/M-S congruent to 0.76, suggests an (111) textured film. A monotonic increase of the blocking temperature T-B, the uniaxial magnetocrystalline anisotropy constant K-U, and the coercivity H-C with increasing annealing temperature was observed. Magnetic parameters indicate an enhancement in the magnetic properties due to the improved Fe55Pt45 phase stabilizing, and the room-temperature stability parameter of 67, which indicates that the magnetization should be stable for more than ten years, makes this material suitable for ultrahigh-density magnetic recording application.(c) 2007 American Institute of Physics.en
dc.format.extent5-
dc.language.isoeng-
dc.publisherAmerican Institute of Physics (AIP)-
dc.sourceWeb of Science-
dc.titleTemperature dependence and magnetocrystalline anisotropy studies of self-assembled L1(0)-Fe55Pt45 ferromagnetic nanocrystalsen
dc.typeoutro-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationUNESP, Inst Chem, Dept Phys Chem, Lab Magnet Mat & Colloids, BR-14801 Araraquara, SP, Brazil-
dc.description.affiliationUNESP, Fac Sci, Dept Phys, BR-17033 Bauru, Brazil-
dc.description.affiliationUnespUNESP, Inst Chem, Dept Phys Chem, Lab Magnet Mat & Colloids, BR-14801 Araraquara, SP, Brazil-
dc.description.affiliationUnespUNESP, Fac Sci, Dept Phys, BR-17033 Bauru, Brazil-
dc.identifier.doi10.1063/1.2747209-
dc.identifier.wosWOS:000247625700096-
dc.rights.accessRightsAcesso restrito-
dc.identifier.fileWOS000247625700096.pdf-
dc.relation.ispartofJournal of Applied Physics-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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