For permeability parts of Mg x Fe 3−x O 4, as shown in Figure 5 c,d, it showed a decreasing trend was observed as a function of frequency.
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Effect of Mg<sup>2+</sup> on Enhancing Stabilization and Microwave Absorption Performance of Mg<sub>x</sub>Fe<sub>3-x</sub>O<sub>4</sub>.
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The sentences
For the magnetic loss tangent as shown in Figure 10 b, the samples showed a trend of decreasing fluctuations, where the value of Fe 3 O 4 was a little more than the other samples.