IEEE Transactions on Magnetics · 1994 · 26 citations · 11 references
Natural SciencesChemistryMaterials ScienceMaterials ChemistryPhysical ChemistrySurface ChemistryMagnetic OxidesMagnetic Properties Of SolidsMagnetism In SolidsMössbauer SpectroscopySurface PhysicsSurfactantsAnionic SurfactantsCationic SurfactantsElectrostatic InteractionsFerritesMössbauer EffectPh DependenceSurfactant EffectsX-ray Diffraction Analysis
The effects of wet-milling barium ferrite in the presence of cationic or anionic surface active substances have been investigated by X-ray diffraction and Mossbauer spectroscopy measurements. Evidence for superparamagnetic relaxation of fine particles, both in the surfactant assisted ball-milled samples and in samples dry-milled in air is obtained from the room temperature and 4.2 K Mossbauer spectra. The similarity between samples milled at pH 3 with the cationic or anionic surfactants is due to electrostatic interactions of the surfactants' hydrocarbon groups with the positively charged barium ferrite surface.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
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M�ssbauer investigation of In and Sc substituted barium hexaferrite
G. Albanese, A. Deriu, E. Lucchini et al. · Applied Physics A · 1981 · 74 citations
Natural Sciences, Materials Engineering, Materials Science +11