Title :
Faraday rotation in Co3+-substituted magnetic garnets
Author :
Takeuchi, A. ; Ando, K. ; Shinagawa, K. ; Saito, T. ; Tsushima, T.
Author_Institution :
Dept. of Phys., Toho Univ., Chiba, Japan
fDate :
9/1/1999 12:00:00 AM
Abstract :
In order to clarify the mechanism of the Faraday rotation in the magnetic garnets containing tetrahedral Co3+, the temperature dependences of the Faraday rotation spectra (FRS) were measured at temperatures between 60 K and 300 K for single crystalline films of (Y,Gd)3(Fe,Co)5O12. As a result, the characteristic dispersive-shaped FRS due to Co3+ were observed at around 1.3 μm, and the FRS depends strongly on the temperature, and increases with decreasing temperature. Furthermore, the FRS were calculated in the scheme of the crystal field theory and the molecular field approximation
Keywords :
Faraday effect; crystal field interactions; gadolinium compounds; garnets; magnetic thin films; yttrium compounds; (YGd)3(FeCo)5O12; (YGd)3Co5O12IG; 1.3 mum; 300 to 60 K; Co3+-substituted magnetic garnets; Faraday rotation; Faraday rotation spectra; YGdCo5O12Fe5O12; crystal field theory; molecular field approximation; single crystalline films; temperature dependences; tetrahedral Co3+; Garnets; Magnetic analysis; Magnetic field measurement; Magnetic films; Magnetic flux; Plasma measurements; Plasma temperature; Rotation measurement; Temperature dependence; Temperature measurement;
Journal_Title :
Magnetics, IEEE Transactions on
