Title :
Variable SAW delay line using amorphous TbFe2film
Author :
Yamaguchi, M. ; Hashimoto, K.Y. ; Kogo, H. ; Naoe, M.
Author_Institution :
Chiba University, Chiba-Chi, Japan
fDate :
9/1/1980 12:00:00 AM
Abstract :
This paper describes a large SAW velocity change obtained in a delay line consisting of an amorphous TbFe2film on a LiNbO3substrate. When an external bias field of about 4 kOe was applied parallel to the direction of SAW propagation, the percentage velocity change attained was -0.27 %. The value of this change is several times as large as that previously reported. The delay line may be used for trimming a small amount of delay time and tuning oscillation frequencies in an SAW oscillator.
Keywords :
Acoustic surface-wave delay lines; Amorphous magnetic films/devices; Surface acoustic wave delay lines; Amorphous magnetic materials; Amorphous materials; Delay lines; Iron; Magnetic materials; Oscillators; Phase shifters; Saturation magnetization; Substrates; Surface acoustic waves;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.1980.1060738
