Fine powders of Y3+ doped Ni0.4 Mg0.4 Cd0.2 Fe2-y O4 spinel nanoferrite (where y = 0.025 to 0.125) were prepared using a sol-gel autocombustion techniques and sintered at 400 oC for duration of 2 hrs. The analysis of XRD patterns revealed the formation of single phase cubic spinel structure. The lattice parameter and crystallite size decreases with increase in Y3+ concentration and average grain size was found to be between 17 to 24.3 nm. The dielectric properties have been studied as a function of frequency (100 Hz to 5 MHz) at room temperature using LCR meter and shown the normal dielectric behaviour. The value of ac conductivity increases with increase in frequency for all the compositions. TG-DTA analysis of the auto combusted ferrites was carried out with a heating rate of 10 ℃/min in air. These results may be applicable for promising area such as high frequency electrical devices.
Bhise R.B and Rathod S.M.2016, Study of The Dielectric and Thermal Behaviour of y3+ Doped Ni0.4 Mg0.4 Cd0.2 Fe2-y O4 nano ferrites. Int J Recent Sci Res. 7(12), pp. 14653-14656.