Influence of Co2+ on the electrical and magnetic properties of Li–Sb ferrites

Mössbauer and magnetic studies of cobalt substituted lithium zinc ferrites prepared by citrate precursor method

“…Co 2+ enters both A site and B sites. However for low concentration Co 2+ ion can be taken to be all in B site and at higher concentration a small amount was observed to go to the A sites [5,11,12]. Hence for small concentration of Co 2+ A site preference can be neglected and the cationic distribution can therefore be assumed to be where parenthesis and square brackets represent tetrahedral (A) and octahedral (B) sites, respectively.…”

“…Zinc substituted lithium ferrites has been observed to have highest saturation magnetization at nearly Zn = 0.2 [7][8][9]. Lithium ferrites substituted with Co 2+ seems to have interesting influence on the properties of the basic ferrite [4,6,10,11]. In the present paper it is proposed to study the influence of Co 2+ ions on Mössbauer and magnetic prop- * Corresponding author.…”

TEMPERATURE DEPENDENT DIELECTRIC BEHAVIOR OF NANOCRYSTALLINE Ca FERRITE

“…A decrease in the dielectric constant at higher frequencies is also observed. This can be explained on the basis that the solid is assumed as composed of well conducting grains separated by the poorly conducting grain boundaries [13]. The electrons reach the grain boundary through hopping and if the resistance of grain boundary is high enough, electrons pile up at the grain boundaries and produce polarization.…”

The effect on dielectric losses in lithium ferrite by cerium substitution

“…The literature reports such improved properties by substitution of Zn, Mn, Mg, Al, Co, Cd, etc. in lithium ferrites [3,4]. Some workers have reported work on Ce substituted lithium ferrite [5].…”