By using the gel utilizing nitrates of bismuth, yttrium and iron dissolved in ethylene glycol as the liquid precursor, single phase bismuth-substituted yttriulll iron garnet (Y3-xBixFe5O12) polycrystalline films with the amount of bismuth substitution x up to 2.5 were prepared by spin-on process on glass substrates, where garnet films with larger x were grown by repetitive gel-coating on thin garnet layer with x=1.5. In addition, the effect of copper or zinc ion substitution on magnetic and magneto-optical properties was examined for films with the chemical formula of Y2BiFe5-yMyO12, where M=Cu2+. or Zn2+
Read full abstract