Title :
Magnetostatic wave propagation characteristics at low temperatures
Author :
Yan, Hua ; Awai, Ikuo
Author_Institution :
Dept. of Electr. & Electron. Eng., Yamaguchi Univ., Ube, Japan
fDate :
5/1/1997 12:00:00 AM
Abstract :
Low temperature characteristics are studied for the linear and nonlinear magnetostatic wave (MSW) propagation in yttrium iron garnet (YIG) films theoretically and experimentally. It is confirmed that the saturation magnetization is the only factor which governs the propagation characteristics at low temperatures. Moreover, the ferromagnetic resonance (FMR) linewidth ΔH of a YIG film is measured from the propagation loss and delay of MSW, and it is found that the ΔH becomes larger at low temperatures
Keywords :
delay lines; ferromagnetic resonance; garnets; magnetic epitaxial layers; magnetic microwave devices; magnetisation; magnetostatic surface waves; magnetostatic wave devices; magnetostatic waves; yttrium compounds; 2 to 5 GHz; 300 K; 77 K; MSW delay; YFe5O12; YIG; YIG films; delay line; ferromagnetic resonance linewidth; linear magnetostatic wave propagation; low temperature; magnetostatic backward volume wave; magnetostatic surface wave; nonlinear magnetostatic wave propagation; propagation loss; saturation magnetization; Garnet films; Iron; Loss measurement; Magnetic resonance; Magnetostatic waves; Propagation delay; Propagation losses; Saturation magnetization; Temperature; Yttrium;
Journal_Title :
Magnetics, IEEE Transactions on
