Enhanced dielectric permittivity on yttrium doped cobalt ferrite nanoparticles

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dc.creatorFranco Júnior, Adolfo
dc.creatorPessoni, Hermínia Veridiana dos Santos
dc.creatorAlves, Thiago Eduardo Pereira
dc.date.accessioned2023-11-09T12:00:13Z
dc.date.available2023-11-09T12:00:13Z
dc.date.issued2017
dc.description.abstractNanoparticles (NPs) of CoYxFe2 xO4 (06 x 0:04) were synthesized by combustion reaction method in order to study the effect of Y3þ ions (x) on the dielectric properties. It was found that the relative dielectric permittivity (e0 ) measured in a broad range frequency 100–2 MHz at room temperature. e0 increases with the Y3þ ions concentration and decreased with frequency, being 200 (83), and 998 (320) at 100 Hz (1KHz) for x ¼ 0 and x ¼ 0:04, respectively. The experimental data could be fitted to the Cole–Cole model and the relaxation time (s) was found to increase with Y3þ ions concentration. The results were discussed in the terms of space charge polarization and ions distribution over tetrahedral A-site and octahedral Bsites of the spinel structure and cation vacancies due to the presence of Y3þ ions in the spinel structure of cobalt ferrites.
dc.identifier.citationFRANCO JR., A.; PESSONI, H. V. S.; ALVES, T. E. P. Enhanced dielectric permittivity on yttrium doped cobalt ferrite nanoparticles. Materials Letters, Amsterdam, v. 208, p. 115-117, 2017. DOI: 10.1016/j.matlet.2017.04.101. Disponível em: https://www.sciencedirect.com/science/article/pii/S0167577X17306468. Acesso em: 4 set. 2023.
dc.identifier.doi10.1016/j.matlet.2017.04.101
dc.identifier.issn0167-577X
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0167577X17306468
dc.language.isoeng
dc.publisher.countryHolanda
dc.publisher.departmentInstituto de Física - IF (RMG)
dc.rightsAcesso Restrito
dc.subjectCobalt ferrite
dc.subjectYttrium-doped cobalt ferrite
dc.subjectDielectric permittivity
dc.subjectCombustion reaction method
dc.titleEnhanced dielectric permittivity on yttrium doped cobalt ferrite nanoparticles
dc.typeArtigo

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