Abstract
A series of Ni1−x Co x Fe2O4 (x=0.1, 0.2, 0.3, 0.4, 0.5) spinel ferrites have been synthesized successfully using the chemical co-precipitation route. The materials were characterized by X-rays powder diffractometry (XRD) and the electrical properties. The obtained crystallite size variation was within 15 to 33 nm using the Scherrer formula. The dc electrical resistivity was measured as a function of temperature. It is noticed that σ dc increases with a rise in temperature. The dielectric measurements were carried out at room temperature as a function of frequency and composition (x). The dielectric constant (ε′) and dielectric loss tangent (tan δ) showed a decreasing trend with increasing field frequency. The ac electrical conductivity is calculated from the dielectric measurements; it increases with the rise in frequency.
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Maqsood, A., Khan, K., Anis-ur-Rehman, M. et al. Structural and Electrical Properties of Ni-Co Nanoferrites Prepared by Co-precipitation Route. J Supercond Nov Magn 24, 617–622 (2011). https://doi.org/10.1007/s10948-010-0956-9
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DOI: https://doi.org/10.1007/s10948-010-0956-9