# Measurement of Surface Acoustic Wave Resonances in Ferroelectric Domains by Microwave Microscopy

## TL;DR

This study demonstrates a contact-less method using scanning Microwave Impedance Microscopy to image and analyze Surface Acoustic Wave resonances within ferroelectric domains, confirming consistent acoustic velocities.

## Contribution

It introduces a novel contact-less microwave microscopy technique for imaging SAW resonances in ferroelectric domains, enabling detailed analysis without physical contact.

## Key findings

- SAW resonances imaged within ferroelectric domains
- Microwave frequencies show consistent acoustic velocities
- Method confirms acoustic nature of the resonances

## Abstract

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