Title :
Magnetostatic Wave Propagation in Yttrium-Iron-Garnet With Microfabricated Surfaces
Author :
Maeda, Atsushi ; Susaki, Masami
Author_Institution :
Electr. & Electron. Eng. Div., Osaka Prefectural Coll. of Technol.
Abstract :
Various periodic gratings were carved on the surface of yttrium-iron-garnet (YIG) single-crystal films by a high-precision dicing saw. The mechanical process achieved the clearer structural modification in comparison with the wet and dry processes used in the past studies. Two types of magnetostaic wave filters were prepared utilizing the YIG gratings. In a band-stop filter, the rejection notch reached 40 dB at 3 GHz. A bandpass filter possessed insertion loss of 5 dB and -3-dB bandwidth of 150 MHz. In addition, a new configuration, "apodized" grating, was proposed to eliminate the ripples in the wide-frequency range
Keywords :
band-pass filters; garnets; magnetostatic wave devices; magnetostatic waves; notch filters; wave propagation; 150 MHz; 3 GHz; 5 dB; Y3Fe5O12; YIG gratings; apodized grating; band-stop filter; bandpass filter; high-precision dicing saw; insertion loss; magnetostatic wave filters; magnetostatic wave propagation; mechanical process; microfabricated surfaces; periodic gratings; rejection notch; single-crystal films; structural modification; Band pass filters; Blades; Gratings; Magnetic separation; Magnetostatic waves; Microwave filters; Microwave propagation; Surface treatment; Surface waves; Yttrium; Magnetostatic waves; simulation; surface treatment; yttrium-iron-garnet (YIG) filters;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2006.878869
