Magnetostatic Spin Waves

TL;DR

This paper explores magnetostatic spin waves in magnetic media, highlighting their unique property of existing without accompanying electric fields, contrary to typical electromagnetic waves.

Contribution

It presents an example of magnetization waves in ferromagnetic media that can occur with negligible electric fields, expanding understanding of spin wave phenomena.

Findings

Magnetostatic spin waves can exist without electric field components.

Ferromagnetic media support magnetization waves with unique properties.

The study broadens the understanding of wave behavior in magnetic materials.

Abstract

In general, Maxwell's equations require that a wave of magnetic field be accompanied by a wave of electric field, and vice versa. In magnetic media it is possible to have waves of magnetization with negligible electric field. We discuss an example of this based on ferromagnetic spin waves.