Magnetic Properties of In Substituted Yttrium Iron R R Garnet (YIG)

The polycrystalline samples of In substituted Yttrium Iron Garnets (YIG) with chemical formula Y Fe In O (x=0.0, 0.2, 0.4 and 0.6) were prepared by ceramic method of synthesis. The single phase formation of 3 5-x x 12the samples was confirmed by X-ray diffraction technique. X-ray diffraction pattern reveals that the structure of the prepared samples belongs to single phase cubic garnet. The lattice constant found to increase with In3+ 3+ 3+substitution. The increase in lattice constant (a) can be understood from the difference in ionic radii of Fe and Inions. The magnetic properties of Y Fe In O sample have been investigated at room temperature with the help of 3 5-x x 12pulse field hysteresis loop technique. The investigation of magnetic properties reveals that saturation 3+magnetization Ms decreases with In substitution.