Title :
Effect of pulsed optical heating on magnetostatic wave propagation in ferrite film
Author :
Dunaev, Sergei N. ; Fetisov, Yuri K.
Author_Institution :
Inst. of Radio Eng., Electron. & Autom., Acad. of Sci., Moscow, Russia
fDate :
11/1/1995 12:00:00 AM
Abstract :
The effective control of magnetostatic spin wave propagation in yttrium-iron-garnet films using illumination of the film with optical pulses has been demonstrated. Heating of the film by 17°C followed by a decrease of the film magnetization of up to 13% was obtained for optical pulses with energy of 0.2 J and duration of 2-5 ms. Variation of the wave frequency by 55 MHz, change of the wave number by tens of percent, and increase of the wave delay time from 60 to 150 ns were observed. These effects may find applications in the development of optically controlled microwave devices
Keywords :
ferrites; garnets; magnetic thin films; magnetisation; magnetostatic surface waves; photomagnetic effect; spin waves; yttrium compounds; 2 to 5 ms; 60 to 150 ns; MSSW propagation; YFe5O12; YIG; YIG films; effective control; ferrite film; film magnetization; magnetostatic spin wave propagation; magnetostatic wave propagation; optical pulses; pulsed optical heating; wave delay time; wave frequency; yttrium-iron-garnet films; Heating; Lighting; Magnetization; Magnetostatic waves; Optical control; Optical devices; Optical films; Optical propagation; Optical pulses; Yttrium;
Journal_Title :
Magnetics, IEEE Transactions on
