Title :
Propagation characteristics of the magnetostatic surface wave in the YBCO-YIG film-layered structure
Author :
Tsutsumi, Makoto ; Fukusako, Takeshi ; Yoshida, Shigeo
Author_Institution :
Fac. of Eng. & Design, Kyoto Inst. of Technol., Japan
fDate :
8/1/1996 12:00:00 AM
Abstract :
Propagation characteristics of the magnetostatic surface wave (MSSW) in a YBa2Cu3O7-x (YBCO)-yttrium iron garnet (YIG) multilayered structure are investigated. Effects of the superconductor on the MSSW are discussed with regard to the dispersion characteristics of both the phase and attenuation constants as a function of the air gap, between YIG and YBCO, taking into consideration the magnetic line-width of the YIG film. It was found that the nonreciprocity of MSSW is enhanced significantly by the superconductivity and depends on the magnetic line-width of the YIG film. To examine the effect of a YBCO on the MSSW propagation, experiments are carried out using a commercially available YIG film. Magnetic losses at low temperature are briefly discussed with experimentally observed nonreciprocity
Keywords :
barium compounds; dispersion (wave); garnets; high-temperature superconductors; magnetic leakage; magnetostatic surface waves; superconducting microwave devices; superconducting thin films; waveguide theory; yttrium compounds; HTS film; HTSC; MSSW propagation; YBCO-YIG film-layered structure; YBa2Cu3O7-x; YBaCuO-YFe5O12; YBaCuO-YIG; air gap; attenuation constant; dispersion characteristics; low temperature; magnetic line-width; magnetic losses; magnetostatic surface wave; multilayered structure; nonreciprocity; phase constant; propagation characteristics; superconductor film; Attenuation; Dispersion; Garnets; Iron; Magnetic films; Magnetostatic waves; Superconducting films; Superconducting magnets; Surface waves; Yttrium barium copper oxide;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
