Niobium modification on dielectric, magnetic and structural features of nanocrystalline Ni-Co ferrites

dc.authoridTEBER, AHMET/0000-0002-7361-2302
dc.authoridSarac, Mehmet Fahri/0000-0002-0760-5569
dc.contributor.authorTeber, Ahmet
dc.contributor.authorSarac, Mehmet Fahri
dc.date.accessioned2024-10-04T18:52:31Z
dc.date.available2024-10-04T18:52:31Z
dc.date.issued2024
dc.departmentBayburt Üniversitesien_US
dc.description.abstractIn this study, we will investigate the structural, characteristic, dielectric and magnetic features of Co0.5Ni0.5NbxFe2-xO4 (0.0 <= x (with 0.2 increments) <= 1.0) nanoparticles, which are prepared via the hydrothermal approach. M-type hexagonal crystal structures are confirmed through XRD, FT-IR, SEM-EDS, TEM-SAED and VSM. Also, we have reported the investigations on dielectric properties and ac conductivity. Based on XRD measurements, it is concluded that all samples have M-type hexagonal crystal structure with nanocrystals ranging from 60 to 97 nm. The diffraction patterns obtained matched well with the calculated patterns from Rietveld analysis. Moreover, from the morphological analysis, it was observed that the small spherical structures of Ni-Co ferrite particles transformed into quadrilateral structures with increasing Nb concentration. The results of the FT-IR study show that the hexaferrite structure is formed as predicted because the expected range of absorption bands is present. According to VSM, Nb-substituted Ni-Co ferrite nanostructures reveal a relatively soft ferromagnetic property. Increasing the concentration of Nb tends to increase the coercive field (H-c) variation. The dielectric factors and ac conductivity were measured in the frequency range of 0.1-10 MHz. The reduction in dielectric factors and tangent losses at low frequencies can be elucidated by both deformation and relaxation polarization mechanisms. Another observation is that ac conductivity is amplified with the applied frequency. In this sense, the electron and hole hopping phenomenon can explain the conduction mechanism.en_US
dc.identifier.doi10.1007/s12034-023-03089-w
dc.identifier.issn0250-4707
dc.identifier.issn0973-7669
dc.identifier.issue1en_US
dc.identifier.scopus2-s2.0-85181847487en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.urihttps://doi.org/10.1007/s12034-023-03089-w
dc.identifier.urihttp://hdl.handle.net/20.500.12403/3520
dc.identifier.volume47en_US
dc.identifier.wosWOS:001140936300001en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherIndian Acad Sciencesen_US
dc.relation.ispartofBulletin of Materials Scienceen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectNiobium substitutionen_US
dc.subjectferritesen_US
dc.subjecthydrothermal methoden_US
dc.subjectCoFe2O4en_US
dc.titleNiobium modification on dielectric, magnetic and structural features of nanocrystalline Ni-Co ferritesen_US
dc.typeArticleen_US

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