Competitive effect of dopants on magnetic and structural properties in yttrium iron garnet co-doped with Er and Cr

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dc.creatorLeal, L. R. F.
dc.creatorMilani, Raquel
dc.creatorOliveira, D. M.
dc.creatorGuerra Dávila, Yuset
dc.creatorPadrón Hernández, Eduardo
dc.creatorFranco Júnior, Adolfo
dc.creatorViana Neto, Bartolomeu Cruz
dc.creatorSantos, F. E. P.
dc.creatorPena Garcia, Ramón Raudel
dc.date.accessioned2023-11-01T14:38:22Z
dc.date.available2023-11-01T14:38:22Z
dc.date.issued2020
dc.description.abstractIn the present work, we have studied the competitive effect of Er and Cr dopants on the structural and magnetic properties of yttrium iron garnet (YIG) nanoparticles synthesized by the sol gel method. The YIG single phase was obtained for all samples and the variations of structural parameters were associated to the dopants influence. Fourier transform infrared spectroscopy showed typical absorption peaks of YIG, with small displacements for larger wavenumbers corresponding to vibrational modes (Fe–O) belonging to the tetrahedral sites. The behavior of the Raman vibrational modes as a function of dopant concentration confirms the insertion of Er in dodecahedral sites and Cr in the octahedral and tetrahedral sites. A frequency shifting of some Raman modes was observed as the Cr concentration increased. The powder morphology was analyzed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM), evidencing agglomerated particles with irregular shapes. The Er and Cr incorporation in YIG promote random fluctuations in the saturation magnetization, coercivity and the magnetocrystalline anisotropy constants of the synthesized compound.
dc.identifier.citationLEAL, L. R. F. et al. Competitive effect of dopants on magnetic and structural properties in yttrium iron garnet co-doped with Er and Cr. Ceramics International, Amsteram, v. 46, n. 11, p. 1-10, 2020. Pt. B. DOI: 10.1016/j.ceramint.2020.04.165. Disponível em: https://www.sciencedirect.com/science/article/pii/S0272884220311093. Acesso em: 4 set. 2023.
dc.identifier.doi10.1016/j.ceramint.2020.04.165
dc.identifier.issn0272-8842
dc.identifier.issne- 1873-3956
dc.identifier.urihttps://www.sciencedirect.com/science/article/pii/S0272884220311093
dc.language.isoeng
dc.publisher.countryHolanda
dc.publisher.departmentInstituto de Física - IF (RMG)
dc.rightsAcesso Restrito
dc.subjectYIG
dc.subjectSol gel
dc.subjectNanoparticles
dc.subjectRaman
dc.subjectMagnetocrystalline anisotropy constants
dc.titleCompetitive effect of dopants on magnetic and structural properties in yttrium iron garnet co-doped with Er and Cr
dc.typeArtigo

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