Liquid phase epitaxy and magneto-optical properties at 1.152 µm and 1.064 µm of garnet films on GdGaG

Growth and characterization of Bi, Pr- and Bi, Sc-substituted lutetium iron garnet films with planar magnetization for magneto-optic visualization

“…In the case of the Sc-substituted garnets a different procedure was used for melt calculations due to scanty quantitative data on the distribution coefficient of Sc in literature. Owing to the high value of the Sc distribution coefficient in YIG, where it can reach values much higher than 1 (up to 8 according to [10]), this coefficient was presumed to also be affected by the presence of other ions in the melt. So, with no possibility of predicting its value with sufficient accuracy, the Sc was added gradually into the melt starting from a Fe 2 O 3 /Sc 2 O 3 molar ratio of 100 and decreasing down to 10.…”

“…Selective substitutions in tetrahedral, octahedral and dodecahedral sites has allowed the establishment of specific features for many substitutions and to build up general models describing iron garnet properties and explaining their origin. In particular, it is known from the first works on active iron garnet media for integrated magneto-optics [10,11] that doping of epitaxial garnet films with Pr or Sc ions results in the formation of negative uniaxial anisotropy (see also [12][13]). When the total uniaxial anisotropy field, becomes approximately less than the shape anisotropy field the film exhibits the 'easy plane'-like behaviour in the external magnetic field [14].…”

Surface morphological changes and magnetic properties of Sc-substituted Y3Fe5O12 epitaxial films deposited on the GGG substrate

“…A cationic substitution in tetrahedral, octahedral and dodecahedral local sites allows additional opportunities for controlling their properties. It is known that doping of epitaxial iron garnet films for integrated magneto-optics with Pr or Sc ions results in the formation of negative uniaxial anisotropy [2,3]. When the uniaxial anisotropy field is less than the shape anisotropy field the film exhibits an ''easy-plane''-like behavior in external magnetic fields, and it has a low in-plain saturation magnetic field [4,5].…”