The magnetic and optical properties of 19.1 SiO2-(34.6-x) CaO-27.03 P2O5-16.22Fe2O3-2.07ZnO-xHAuCl4 (where
x = 1, 2 and 4 wt %) glass-ceramics have been studied. The increase of
Au content leads to increase in magnetite phase. The microstructure
exhibits the formation of nano size particles, which forms an assembly
of particles at higher Au content (x=4 wt%). UV-Vis spectra have shown
the absorption is decreasing in both UV and visible region. Magnetic
properties measurement has shown an increase in saturation magnetization
and coercive field with an increase in Au content.