Reply to the comment on the paper "Thermodynamics of two-dimensional magneto nanoparticles (P. Vargas, D. Altbir, M.Knobel and D. Laroze)" by H. Buettner and Yu. Gaididei

TL;DR

This paper discusses the persistence of bi-stability in two- and three-dimensional systems of non-interacting magnetic nanoparticles with uniaxial anisotropy, emphasizing the role of magnetic field orientation.

Contribution

It clarifies the conditions under which bi-stability occurs in magnetic nanoparticle systems, extending previous results to three dimensions with specific field orientation.

Findings

Bi-stability exists in 2D systems of non-interacting magnetic nanoparticles.

Bi-stability persists in 3D systems when the magnetic field is perpendicular to the anisotropy axis.

The orientation of the magnetic field is crucial for bi-stability in these systems.

Abstract

It is shown that there is bi-stability in a two dimensional system consisting of non interacting magnetic nanoparticles with equal uniaxial anisotropies. It is also shown that bi-stability still remains in three dimensions. The only consideration is that the applied magnetic field has to be perpendicular to the anisotropy axis.