Effects of soaking time and Mn additives on the ferroelectric properties of Co0.6Zn0.4Fe2O4 ferrites

The effect of soaking time during sintering of Co0.6Zn0.4Fe2O4 on the ferroelectric polarization was studied. There is a noticeable increase in the ferroelectric polarization with temperature for 4 h soaking time. Above 4 h, the number of Fe2+ ions decrease at the octahedral sites. The pronounced increase in Fe2+ at the B sites increases the ferroelectric polarization on the surface of the samples. The rising temperature increases the hopping mechanism of electrons between Fe2+ and Fe3+ ions which are available for polarization gains. The composition of Co0.6Zn0.4Fe2-xO4 where x = 0.2 was found to obtain the best ferroelectric properties for technological applications.