Abstract
Single crystal Y3Fe5O12 (YIG) lm was grown onto (111) oriented gadolinium gallium garnet (GGG) substrate by the liquid phase epitaxy (PLD) technique. The X-ray di raction measurements showed that epitaxial growth of the lm along its (111) axis. The surface characteristic was investigated by atomic force microscopy (AFM) measurement. The magnetic eld sensor consisted of a rectangular shape with 5 mm wide, 15 mm long and 5 μm thick YIG lm and a pair of identical 50 μm wide microstrip copper transducers elements separated by 6 mm. The lter was tested by measuring re ection S11 characteristic at various bias magnetic elds. The results have showed that when the bias eld increased from 0 to 2.5 kOe, the frequency value corresponding to S11 maxima increased from 1 GHz to 9 GHz. This suggests that the wide range magnetic eld sensing and the highly sensitive eld sensing are simultaneously ful lled with the YIG lm.
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