Magnetic behavior of nanoparticles in patterned thin films

TL;DR

This paper investigates how the size and shape of truncated conical nanoparticles in patterned thin films influence their magnetic behavior, providing phase diagrams and a method to assess uniaxial anisotropy.

Contribution

It introduces a scaling technique to generate phase diagrams for nanoparticle magnetic structures and proposes a simple method to determine uniaxial anisotropy strength.

Findings

Phase diagrams of magnetic structures are obtained.

Uniaxial anisotropy significantly affects magnetic properties.

A new method to estimate anisotropy strength is proposed.

Abstract

The magnetic behavior of truncated conical nanoparticles in patterned thin films is investigated as a function of their size and shape. Using a scaling technique, phase diagrams giving the relative stability of characteristic internal magnetic structures of the particles are obtained. The role of the uniaxial anisotropy in determining the magnetic properties of such systems is discussed, and a simple method for stablishing its strength is proposed.