Magnetization of nanoparticle systems in a rotating magnetic field

TL;DR

This paper explores how uniaxial ferromagnetic nanoparticles exhibit significant thermal magnetization enhancement when subjected to a rotating magnetic field, analyzing resonance effects and interaction roles.

Contribution

It introduces a detailed analysis of thermal magnetization enhancement in nanoparticles under rotating fields, including resonance dependence and dipolar interaction effects.

Findings

Thermal magnetization is significantly enhanced in nanoparticles under rotating magnetic fields.

Resonant frequency plays a crucial role in the induced magnetization.

Magnetic dipolar interactions influence the magnetization behavior.

Abstract

The investigation of a sizable thermal enhancement of magnetization is put forward for uniaxial ferromagnetic nanoparticles that are placed in a rotating magnetic field. We elucidate the nature of this phenomenon and evaluate the resonant frequency dependence of the induced magnetization. Moreover, we reveal the role of magnetic dipolar interactions, point out potential applications and reason the feasibility of an experimental observation of this effect.