Abstract
The Erbium substituted manganese spinet ferrites were prepared via the microemulsion route. The average crystallite size varies from 10.21 to 17.41 nm, while the lattice constant observes to increase from 8.473 to 8.509 angstrom. X-ray density increases with the incorporation of Er3+ ions in manganese ferrites. The characteristic bands lie in the range of 410-560 cm(-1 )which confirms the cubic structure of synthesized ferrites. The band variation is evidence of the successful substituting of Er3+ ions in manganese spinet ferrites lattices. Bond lengths increase with the increase of Er3+ content. The dielectric constant, dielectric loss, and tan loss decrease as frequency and Erbium concentration increase. Scanning electron microscopy (SEM) micrographs reveal the decrease in grain size with Er3+ in manganese ferrites. The obtained results suggested that synthesized ferries can be potential candidates for high-frequency applications.