Abstract
In this study, the Y3+ ion-substituted M-type Sr0.7La0.3Fe11.75−x Y x Co0.25O19 (0 ≤ x ≤ 0.2) hexagonal ferrites were synthesized by the traditional ceramic method. The structural, morphological, and magnetic properties were investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM), and vibrating sample magnetometer techniques. The results show that a single M-type strontium ferrite was obtained with the Yttrium content (x) from 0 to 0.08, and the impure phase appeared when x is above 0.08. SEM images indicate the hexagonal platelet-like particles, and the size of the materials is about 3–5 μm. The saturation magnetization (M s) and coercivity (H c) of the magnetic powders both increased with the increase of x from 0 to 0.12, then decreased with the increase of x from 0.16 to 0.2.
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