Title :
Magnetostatic Wave Propagation in Yttrium-Iron-Garnet with Microfabricated Surfaces
Author :
Maeda, A. ; Susaki, M.
Author_Institution :
Osaka Prefectural Coll. of Technol., Osaka
Abstract :
Various periodic gratings were carved on the surface of yttrium-iron-garnet (YIG) single crystal film by using a high-precision dicing saw. Deeper structural modifications were achieved with well-controlled linearity, spacing, and edge structure. Containing deep gratings, two types of magnetostatic wave filters were designed and tested. In a band-stop filter, rejection notch reached 40 dB at 3 GHz. A band-pass filter possessed insertion loss of 5 dB and -3 dB bandwidth at 150 MHz. In addition, new configuration using an apodized grating was proposed. A periodic grating on the surface is effective to improve the propagation characteristics of the YIG filter.
Keywords :
band-pass filters; band-stop filters; ferromagnetic materials; garnets; magnetic thin films; magnetostatic waves; scanning electron microscopy; yttrium compounds; SEM images; YIG; apodized grating; band-pass filter; band-stop filter; bandwidth 150 MHz; frequency 3 GHz; high-precision dicing saw; insertion loss; magnetostatic wave filters; magnetostatic wave propagation; microfabricated surfaces; periodic gratings; rejection notch; structural modification; yttrium-iron-garnet single crystal film; Band pass filters; Bandwidth; Gratings; Insertion loss; Linearity; Magnetic separation; Magnetostatic waves; Surface waves; Testing; Yttrium;
Conference_Titel :
Magnetics Conference, 2006. INTERMAG 2006. IEEE International
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-1479-2
DOI :
10.1109/INTMAG.2006.376179
