Nanomaterials · 2019 · 252 citations · 36 references
Natural SciencesMaterials EngineeringMaterials ScienceCeramic MaterialsMagnetic MaterialsNanomaterialsFerrimagnetic MaterialsMagnetic CeramicsMagnetic NanomaterialsMagnetic OxidesMagnetic Properties Of SolidsNanocompositesCompositionFerritesGrain BoundariesHexaferritesNanostructured FerritesOxidationSpinel FerritesX-ray Diffraction Analysis
(x = 2, 3, 4, and 5) as strongly exchange-coupled nanosized ferrites were fabricated using a one-pot sol⁻gel combustion method (citrate sol-gel method). The X-ray diffraction (XRD) powder patterns of the products confirmed the occurrence of pure, exchange-coupled ferrites. Frequency dependencies of the microwave characteristics (MW) were investigated using a co-axial method. The non-linear behavior of the MW with the composition transformation may be due to different degrees of Fe ion oxidation on the spinel/hexaferrite grain boundaries and strong exchange coupling during the hard and soft phases.
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