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La-doped Sr-hexaferrite (Sr1−xLaxFe12O19) (x = 0.05, 0.10, 0.15, 0.20) nanopowders with particle size ranging from 80 to 110 nm were successfully synthesized by sol–gel auto-combustion. The phase formation temperature increases, while the particle size decreases as the La-doping content goes up. The partial substitution of Sr2+ by La3+ results in the suppression effects on the growth-up of the crystallites...
Single-phase SrM ultrafine powders with single-domain particle ranging from 200 to 400 nm in size were successfully synthesized by a cetyltrimethylammonium bromide (CTAB)-assisted co-precipitation method, and excellent magnetic properties with saturation magnetization of 68.6 A·m2·kg−1 and coercive field of 0.5250 T are obtained. As CTAB content exceeds 5.0 wt%, the impurities emerge due to the deterioration...
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