Generation and imaging of magnetoacoustic waves over millimetre distances

TL;DR

This paper demonstrates the generation and imaging of large-amplitude magnetoacoustic waves over millimeter distances in a nickel thin film, revealing detailed wave behavior through direct visualization.

Contribution

It introduces a hybrid piezoelectric/magnetic system for generating and imaging magnetoacoustic waves over large distances, with quantification of wave properties.

Findings

Magnetization waves with up to 25° variation generated.

Direct imaging of standing and propagating waves achieved.

Waves observed over distances up to several millimeters.

Abstract

Using hybrid piezoelectric/magnetic systems we have generated large amplitude magnetization waves mediated by magneto-elasticity with up to 25 degrees variation in the magnetization orientation. We present direct imaging and quantification of both standing and propagating acoustomagnetic waves with different wavelengths, over large distances up to several millimeters in a nickel thin film.