Effects of In3+-substitution on the structure and magnetic properties of multi-doped YIG ferrites with low saturation magnetizations

CO-precipitation synthesis of iron-containing garnets Y3Al5−Fe O12 and their magnetic properties

“…Moreover, as shown in Fig. 7(I), the cell parameters obtained through a fitting analysis of the XRD pattern using the Jade 5 software [11,17] demonstrated a nearly linear increase with increase in the amount of Fe 3 þ ions from 0 to 5. Such an enlargement of the crystal cell can be attributed to the replacement of smaller Al 3 þ ions (54 pm) by larger Fe 3 þ ions (65 pm) in the garnet structure.…”

“…These materials exhibit different physical-chemical properties because of their different atom coordination [3]. Because the Fe 3 þ ion is similar to the Al 3 þ ion in size, the former can easily displace the diamagnetic Al 3 þ ions as the center ion of the tetrahedrons (a) and octahedrons (d); therefore their magnetic characteristics are different [8][9][10][11]. It is unknown whether the iron-containing garnet is a YAG-YIG complex mixture or a Y 3 Al 5 À x Fe x O 12 solid solution.…”

Phase and magnetic properties evolutions of Y3−x(CaZr)xFe5−xO12 by the sol–gel method

“…The magnetic properties of a magnetic material depend largely on the crystal size distributions as the domain structure and magnetization process depends on particle size [30]. When the crystal size is grown to the critical size of single domain, the H c is decided by magnetic domain rotation, so the H c reaches the maximum [31]. The H c of the sample with x ¼0.3 reaches the maximum at 1080°C, which implies that the crystal size is most near the critical size of single domain, that is 85.6 nm.…”

Structural, morphological, dielectric and magnetic properties of Zn‐Zr co‐doping yttrium iron garnet

“…13,14 For instance, Chen F. et al have reported that the substitution of the Fe atoms with the Zr atoms at the 16a position can decrease the permeability and magnetic loss in the 1 to 100 MHz range. 18 Moreover, recently, ferrite co-doped with other elements has attracted great attention due to the improvement of doping technology. 16,17 Aldbea et al have shown that the Fe 3+ ions replaced by Al 3+ ions can improve the coercive field while decreasing the saturation magnetization and dielectric properties.…”

“…11 Guo et al confirmed that a replacement of the iron ions at the 16a position in YIG with an appropriate amount of the In 3+ ions significantly reduce the magnetic anisotropy and coercivity of YIG. 18 Moreover, recently, ferrite co-doped with other elements has attracted great attention due to the improvement of doping technology. For instance, substitution of the Fe atoms with the combined doping of Ca 2+ -V 5+ ions can reduce the sintering temperature and yield polycrystalline garnets with low moments that are easily magnetically saturated and have high Curie temperature.…”