Abstract
Effects of Li2CO3 addition on structural and magnetic properties of M-type strontium hexaferrite have been studied by using crystallographic and magnetic measurements. The samples were prepared thru the flux-aided solid state reaction by adding small fractions of Li2CO3 powder to the SrFe12O19 precursors. The key action of a flux salt is strongly dependent upon solubility and dispersion of the salt ions over the grain. So, the crystallographic, microstructural, and macroscopic magnetic characteristics have been explored in relations with the role of flux salt by means of XRD, FE-SEM, VSM, and Mössbauer spectroscopy. Finally, the result strongly suggests that most of the flux salt Li1+ ions distribute throughout the grain surface and act like a surfactant that enhance the degree of grain separation and thereby reduce the coercivity of the sample.
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