The ε ′ values indicates a decreasing trend while the ε ′′ values show an increasing trend versus frequency changes which is due to the dipolar/orientation polarization mechanism 18 – 23 .
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An investigation of microstructural, magnetic and microwave absorption properties of multi-walled carbon nanotubes/Ni<sub>0.5</sub>Zn<sub>0.5</sub>Fe<sub>2</sub>O<sub>4</sub>.
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