Experimental Investigation of Magnetostatic Waves Excitation by Coaxial Transducers in Yttrium Iron Garnet Films

Excitation of magnetostatic waves in a yttrium iron garnet film by a short-circuited SMA transducer, whose thin linear jumper connects the central conductor to an external grounded coaxial cylinder, is considered. The frequency dependences of the return loss for yttrium iron garnet films of different thickness with different orientation of the transducer thin linear jumper relative to the applied external constant magnetic field direction are measured. The cases of the presence and absence of a distance between the transducer and the film are investigated.