Effect of Tb substitution on structural, magnetic and electrical properties of magnesium ferrites

Magnetic and dielectric behavior of terbium substituted Mg1−xTbxFe2O4 ferrites

“…The line-widths of all the samples vary in the range (746-1015 Oe) except for x = 0.16, which has the highest line-width (1146 Oe) as compared to rest of compositions. The composition Mg 0.98 Tb 0.02 Fe 2 O 4 (x = 0.02) has the minimum line-width (746 Oe) and highest saturation magnetization (32 emu/g) [7]. The linewidths obtained in the present investigation are much lower than the reported literature [8,9].…”

“…The saturation magnetization of the samples under investigation decreases [7] with the increasing concentration of terbium ions. So a reasonable decrease in i is consistent with saturation magnetization results.…”

“…16, 0.18, 0.20) ferrites was prepared by ceramic method described in our earlier communication [7]. The ferromagnetic resonance measurements were performed on spherical shaped samples using a standard FMR spectrometer at X-band (9.5 GHz) in TE102 reflection cavity.…”

“…It is assumed that some of the terbium ions may reside on the grain boundaries; these can hinder the growth [20] and also exert stress on the grains which causes the reduction of grain size. In our previous communication [7] EDX …”

“…Many research groups have studied magnetic and dielectric properties of magnesium ferrites with the addition of different rare earth ions in order to achieve optimized properties. The addition of rare earth metal ions like Gd, La, and Tb introduces changes in the structure and texture, allowing for significant modifications to be created in the magnetic and dielectric properties of these ferrites [3][4][5][6][7]. The aim of the present work is to investigate the effect of terbium ions substitution for magnesium ions on ferromagnetic resonance,…”