Title :
Bi-substituted iron garnet films exhibiting stable Faraday rotation against wavelength variation in the 1.55 μm band
Author :
Suzuki, Toshiyasu ; Kawai, Hirotaka ; Umezawa, Hiromitsu
Author_Institution :
FDK Corp., Shizuoka, Japan
fDate :
9/1/1997 12:00:00 AM
Abstract :
We found a Bi-substituted iron garnet film (Tb1.86Bi 1.14Fe4.67Al0.24Co0.09O 12) which was characterized by stable Faraday rotation against wavelength variation in the 1.55 μm band. First, Co- and Bi-substituted iron garnet films were grown by liquid phase epitaxy (LPE), and the dependence of their Faraday rotation against wavelength variation was measured. It was found that the dependence of Bi-substituted iron garnet films on wavelength was reduced in the 1.55 μm band due to a Faraday rotation attributable to Co3+ ions. Faraday rotation-wavelength coefficients (FWC) of these films in the 1.53 μm-1.57 μm band were 0.01%/nm, or virtually zero. Also relations between FWC and film composition were discussed
Keywords :
Faraday effect; bismuth compounds; garnets; infrared spectra; magnetic epitaxial layers; magneto-optical isolators; terbium compounds; 1.53 to 1.57 mum; Bi-substituted iron garnet film; Bi-substituted iron garnet films; Co-substituted iron garnet films; Faraday rotation-wavelength coefficients; Tb1.86Bi1.14Fe4.67Al0.24 Co0.09O12; film composition; liquid phase epitaxy; optical absorption spectra; stable Faraday rotation; wavelength variation; Absorption; Bismuth; Epitaxial growth; Garnet films; Iron; Magnetic field measurement; Optical films; Phase measurement; Rotation measurement; Stability; Virtual manufacturing; Wavelength measurement;
Journal_Title :
Magnetics, IEEE Transactions on
