Modification of Bi:YIG film properties by substrate surface ion pre-treatment

Magneto-Optic Properties of Ultrathin Nanocrystalline Ferrite Garnet Films in the 8K to 300K Temperature Interval

“…During the annealing process, as a result of accelerated diffusion within this region, there occurs some compositional equalization of the film's contents within the amorphization region, and Ga 3+ ion content reaches 2.5 formula units within this sublayer. This model is supported by the results of the MO property studies in ultrathin ferrite garnet films of nominal composition Bi 2.8 Y 0.2 Fe 5 O 12 and by the fine structure in transitional layers between the substrate and film which is observed in these films [21].…”

“…With increasing bismuth substitution in a garnet structure, a red-shifting effect occurs for this MCD signal band, which in the films studied in the present work is near 440 nm. For iron garnets of composition Bi 2.8 Y 0.2 Fe 5 O 12 , the long-wave MCD peak is shifted towards 490 nm [21]. The spectral position of this MCD peak remains at 490 nm for all films of thickness between 15 and 160 nm.…”

“…These islands will be similar in their appearance to very flat bumps on the substrate surface. The studies of surface morphology made with thin garnet films of nominal composition Bi 2.8 Y 0.2 Fe 5 O 12 and thickness between 4 nm and 100 nm using scanning probe microscopy revealed that for a film thickness around 5 nm, flat bumps appear on the film surface, the heights of which exceed the nominal film thickness by several times [21].…”

Magnetic properties of epitaxial bismuth ferrite-garnet mono- and bilayers

“…The thickness of the S1 film is chosen to be λ/ 4 and of the S2 film 3λ/4 as in for magnetophotonic crystals operating in visible spectrum range [4]. It has been shown previously [5] from the investigation of such films of different thicknesses that the diffusion layer for these films does not exceed 10 nm and the magnetic and magnetooptical properties of the films with chosen thicknesses are close to those for the bulk materials.…”

Grain size and Fe2+ concentration‐dependent magnetic, dielectric, and magnetodielectric properties of Y3Fe5O12 ceramics

“…The family of garnets has provided a fascinating field of science and technology because of versatile functions that could be obtained by introducing different ions . Among them, Y 3 Fe 5 O 12 (YIG), as a well‐known microwave ferrite, has been widely applied in microwave, magnetic, and magneto‐optical devices due to its controllable saturation magnetization, low dielectric loss in microwave region, and small linewidth in ferromagnetic resonance . YIG possesses a cubic structure with space group Ia3d , Fe 3+ ions occupy two sites‐the 16 a octahedral and the 24 d tetrahedral sites and Y 3+ ions are located at the 24 c dodecahedral sites .…”