Influence of Er Substitution on Mg-Zn Nanoparticles’ Magnetic Properties and Applications

Abstract

Lanthanide Eribum substituted spinel ferrites with a composition of Zn0.6Mg0.4ErxFe2-xO4 (x=0.00,0.05,0.10 and 0.15) were synthesized by the co-precipitation method. X-ray diffraction studies relvealed the formation of single –phase cubic structure for all compositions. The lattice constant and crystallite size varied with increasing Er3+ content in Zn-Mg ferrite. 57Fe Mossbauer spectroscopic studied were carried out to determine the chemical state of iron, its occupaney and relarive amount in tetrahedral (A)site,octahedral(B) site or both .The obtain value of relative amount of iorn in the tetrahedral(A) site and octahedral(B) site or both was used to obtain the cation distribution at the tetrahedral (A) site and octahedral(B) sites. The cation distribution was used to determine the cation-cation distances and interionic bond angles to understand the spin interactions and the impact of Er3+ ion substitution on magnetic interactions in substituted Zn-Mg ferrites.