Synthesis and Magnetic Properties of Sr-Substituted M-type Ba Hexaferrite Nanoparticles | ||||
| Egyptian Journal of Solids | ||||
| Editorial, Volume 37, Issue 1, 2014, Page 33-44 PDF (1.05 MB) | ||||
| DOI: 10.21608/ejs.2014.148365 | ||||
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| Abstract | ||||
| Barium hexaferrites with the general formula Ba1-xSrxFe12O19(x=0.1, 0.3, 0.5, 0.7, 0.8, 0.9) were synthesized by the citrate method and annealed at 1100 0 C for 2 hours. The structural and magnetic characteristics were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), and vibrating sample magnetometer (VSM) techniques. XRD patterns confirmed the formation of BaSr-M phase in addition to the non-ferromagnetic intermediate phase (α-Fe2O3). The magnetic properties such as saturation magnetization (Ms), remanence (Mr), squarness ratio (Mr/Ms) and coercivity (Hc) were calculated from hysteresis loops. The magnetic properties of the Ba-ferrite were remarkably modified due to the substitution of Sr, this suggests that the materials under investigation are suitable for different applications requiring high temperatures. | ||||
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