Surface Acoustic Wave (SAW) resonances were imaged within a closed domain inthe ferroelectric LiTaO$_3$ via scanning Microwave Impedance Microscopy (MIM).The MIM probe is used for both SAW generation and measurement, allowingcontact-less measurement within a mesoscopic structure. Measurements taken overa range of microwave frequencies are consistent with a constant acousticvelocity, demonstrating the acoustic nature of the measurement.
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