39 We note that the imaginary part of dielectric constant ( ε ′′) shows a decreasing trend with increase in frequency (see Fig. 7 ), almost similar to real part of dielectric constant and loss tangent.
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Structures and properties of Mg<sub>0.95</sub>Mn<sub>0.01</sub>TM<sub>0.04</sub>O (TM = Co, Ni, and Cu) nanoparticles synthesized by sol-gel auto combustion technique.
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