An investigation of structural and magnetic properties of M-type strontium hexaferrite doped with Mn2+ cations

Document Type : Research Paper


In this study, M kind of hexaferrite strontium with the formula of SrFe12-x(ZrCo0.5M0.5)0.5XO19
by Sol-Gel self-combustion in pH=7 was synthesized and the influence of substitution of iron (III) ions
by M= Mn2+ with various amounts (x=0.2, 1, 1.8) was investigated. In addition, structural features, bond
situation, particles morphology and electromagnetic traits of frail product were studied by using X-ray
powder, diffraction (XRD), Fourier Transform Infrared Spectroscopy (FT-IR), Field Emission Scanning
Electron Microscopes (FE-SEM) and Value Stream Mapping (VSM) analysis. The result of XRD showed
the formation of hexaferrite strontium phase and (VSM) analysis illustrates the amount of (Ms) and (Mr)
increased in comparison with pure sample and it can be seen that (Ms) and (Mr) reduced when the
amount of X increased. Therefore, the optimal level of magnetism for the sample of magnesium will be
in X=0.4 and Hc reduced by enhancing X from 0.2 to 1.6 which showed that the prepared nanoparticle
became softer as the amount of X increased.