Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8158309 | Journal of Magnetism and Magnetic Materials | 2013 | 20 Pages |
Abstract
Mixed phase composites of SrFe12O19/MgFe2O4/ZrO2 were prepared via the citrate gel technique as potential candidate materials for magnetic hyperthermia. Structural and magnetic properties of the samples were studied using powder X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM) and a vibrating sample magnetometer. XRD and FE-SEM data confirm that magnesium ferrite and zirconium oxide phases increased with increasing Mg and Zr content in the precursors. Magnetization loops for the composites were measured at room temperature and showed significant variation of saturation magnetization, coercivity and remanence depending on the amount of the highly anisotropic Sr-hexaferrite phase. The sample with the highest Mg and Zr content had the lowest coercivity (80Â Oe) and saturation magnetization (41Â emu/g). The composite samples each were exposed to a 214Â kHz alternating magnetic field of amplitude 22Â Oe and a significant heating effect was observed in selected samples, which suggests potential for use in magnetic hyperthermia.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Amin Ur Rashid, Paul Southern, Jawwad A. Darr, Saifullah Awan, Sadia Manzoor,