Spin-wave fluctuations in ferrimagnetic Mgx Fe3-x O4 nanoparticles

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dc.contributor.authorFranco A.
dc.contributor.authorZapf V.S.
dc.contributor.authorBarbeta V.B.
dc.contributor.authorJardim R.F.
dc.date.accessioned2019-08-19T23:47:28Z
dc.date.available2019-08-19T23:47:28Z
dc.date.issued2010
dc.description.abstractWe have performed a systematic study of the magnetic properties of a series of ferrimagnetic nanoparticles of Mgx Fe3-x O4 (0.8times;1.5) prepared by the combustion reaction method. The magnetization data can be well fitted by Bloch's law with T3/2. Bloch's constant B determined from the fitting procedure was found to increase with Mg content x from ∼3.09× 10-5 K-3/2 for x=0.8 to 6.27× 10-5 K-3/2 for x=1.5. The exchange integral JAB and the spin-wave stiffness constant D of Mgx Fe3-x O4 nanoparticles were also determined as ∼0.842 and 0.574 meV and 296 and 202 meV Å2 for specimens with x=0.8 and 1.5, respectively. These results are discussed in terms of cation redistribution among A and B sites on these nanostructured spinel ferrites. © 2010 American Institute of Physics.
dc.description.firstpage073904
dc.description.issuenumber7
dc.description.volume107
dc.identifier.citationFRANCO, A.; ZAPF, V. S.; Barbeta, V. B.; JARDIM, R. F.. Spin-wave fluctuations in ferrimagnetic Mg[sub x]Fe[sub 3−x]O[sub 4] nanoparticles. Journal of Applied Physics, v. 107, n. 7, p. 073904, 2010.
dc.identifier.doi10.1063/1.3359709
dc.identifier.issn0021-8979
dc.identifier.urihttps://repositorio.fei.edu.br/handle/FEI/1575
dc.relation.ispartofJournal of Applied Physics
dc.rightsAcesso Restrito
dc.titleSpin-wave fluctuations in ferrimagnetic Mgx Fe3-x O4 nanoparticles
dc.typeArtigo
fei.scopus.citations15
fei.scopus.eid2-s2.0-77951561645
fei.scopus.subjectBloch's law
fei.scopus.subjectCation redistribution
fei.scopus.subjectCombustion reactions
fei.scopus.subjectExchange integrals
fei.scopus.subjectFitting procedure
fei.scopus.subjectMagnetization data
fei.scopus.subjectMg content
fei.scopus.subjectNano-structured
fei.scopus.subjectSpin-wave fluctuation
fei.scopus.subjectSpinel ferrites
fei.scopus.subjectStiffness constants
fei.scopus.subjectSystematic study
fei.scopus.updated2024-03-04
fei.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=77951561645&origin=inward
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