Growth and properties of Sb and Ti substituted (100) EuIG films as a function of Pb content

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Abstract
Films of (100) EuIG doped with Sb or Ca:Ti and (100) EuYIG doped with Sb were grown with various Pb contents from a PbO:5.5 B2O3 (mole ratio) based flux. The large Pb‐induced uniaxial anisotropy, which occurs in (100) Pb:EuIG films was not reduced significantly by Sb or Ca:Ti additions. The l‐parameter decreased from 0.07 for undoped films to about 0.04 to 0.05, for doped films at Pb contents between 0.6 and 0.8 moles/formula unit. These data suggest that Sb and Ti had substituted for the octahedral Fe and had increased the magnetization. The Q‐factor for films with these l‐parameters was about 2. It is further assumed that Pb is incorporated as Pb2+ and Pb4+ on different cation sites according to the model of Scott and Page. A comparison of our calculated and measured values of Δa support this model.