Preparation and optical properties of single crystal thin films of bismuth substituted iron garnets for magneto-optic applications

Preparation of Bi₂Gd₁Fe₅O₁₂ magnetic garnet films showing Faraday rotation of 36.3 deg./µm on glass substrates by metal organic decomposition method

“…Among them, bismuth substituted gadolinium iron garnet (Bi:GdIG) is one of the ferrimagnetic rate-earth iron garnets showing perpendicular magnetic anisotropy [8,9]. There are several methods to prepare the Bi:GdIG thin films such as a laser ablation [10], RF magnetron sputtering [11], liquid phase epitaxy [12], etc. Metal organic decomposition (MOD) method is a promising one to prepare magnetic garnet film, because it is a simple fabrication method which is composed of spin coating of the MOD solutions ( 12 thin films have been fabricated on (111) oriented gadolinium gallium garnet (GGG) single crystal substrates [9,10,11,12,13,14,15], and glass substrates [16].…”

“…There are several methods to prepare the Bi:GdIG thin films such as a laser ablation [10], RF magnetron sputtering [11], liquid phase epitaxy [12], etc. Metal organic decomposition (MOD) method is a promising one to prepare magnetic garnet film, because it is a simple fabrication method which is composed of spin coating of the MOD solutions ( 12 thin films have been fabricated on (111) oriented gadolinium gallium garnet (GGG) single crystal substrates [9,10,11,12,13,14,15], and glass substrates [16]. In order to apply Bi:GdIG or Bi:YIG thin films in Si/SiO 2 based waveguide optical isolators [17,18,19] and MOSLMs [7], it is required that Bi:GdIG thin films are prepared on glass substrates or SiO 2 thin films.…”

Magnetic studies of Bi x Y3-x Fe5O12 fabricated using conventional method

“…Bi-YIG have been found to exhibit a drastic increase in Magneto-Optic (MO) effect as reflected to the Faraday rotation θ F and the Kerr rotation θ K values [1,2], which are good candidate materials for microwave device and magneto-optical recording medium [3]. Structure analysis by Menzer [4] showed that in YIG, cations are located at centers of corresponding oxygen polyhedral, i.e.…”

“…Structure analysis by Menzer [4] showed that in YIG, cations are located at centers of corresponding oxygen polyhedral, i.e. Y +3 is located at the center of dodecahedron (distorted cube) with ionic radius 1 • C all for 3 h. The calcined samples are crushed and then ground again into powder form. X-ray diffraction was performed with a Cu target.…”

Preparation and Characterization of Bi substituted gadolinium iron garnet Films by Metal Organic Decomposition and their Dependence on Annealing Gases

“…There are several methods to prepare the bismuth substituted rare-earth iron garnet thin films such as a laser ablation 11) , a liquid phase epitaxy 12) , RF magnetron sputtering 13) , etc. Among them, MOD is a promising method to prepare magnetic garnet film, because it is a simple fabrication method, and guarantees high uniformity in chemical composition and purity combined with chemical stability 1,14,15,16,17) .…”