Abstract
The effect of Al substitution on electrical and dielectric parameters of Ni–Zn ferrite has been discussed in the present work. The phase identification, surface morphology was studied using X-ray diffractometer (XRD), scanning electron microscope (SEM), respectively. The XRD patterns confirm the single-phase formation of these ferrites. With Al3+, substitution lattice parameter decreases due to smaller Al3+ ions replacing Fe3+ ions. The average grain size obtained from SEM results are in the range of 390–27 nm. The DC resistivity was observed to increase with increasing Al3+ ions concentration due to the unavailability of Fe3+ ions. Dielectric constant (\(\upvarepsilon ^{\prime }\)) and dielectric loss tangent (tan δ) have been studied as a function of frequency (1 kHz–10 MHz) and temperature (50–300 °C). The observed results are explained on the basis of interfacial polarization as predicted by Maxwell and Wagner.
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Rajesh Babu, B., Prasad, M.S.R., Ramesh, K.V. et al. Electrical and Dielectric Properties of Non-magnetic Al3+ Substituted Ni–Zn Nano Ferrites for High Frequency Applications. J Inorg Organomet Polym 26, 589–597 (2016). https://doi.org/10.1007/s10904-016-0351-5
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DOI: https://doi.org/10.1007/s10904-016-0351-5