The effect of Bi2O3 addition on the microstructure and magnetic properties of YIG

The effect of Bi2O3 addition on the microstructure and magnetic properties of yttrium iron garnet prepared by a conventional ceramic method was studied using scanning electron microscopy, X-ray diffractometry, magnetometry and ferromagnetic resonance experiments. The sintering temperature could be reduced by 50 K by adding 1.5 wt% Bi2O3 without variation in magnetic properties of YIG. A YIG specimen sintered at 1623 K with 1.5 wt% Bi2O3 showed ferromagnetic resonance linewidth ΔH of 62 Oe.