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Modeling of macroscopic anisotropies
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7 About this thesis
Contents
2
Multi-spin nanoparticle as an effective one spin problem
Subsections
1
Introduction
2
Model
1
Shape and surface of nanoparticles
2
Localized spin (atomistic or Heisenberg) model
3
Analytical background
1
Second-order surface-anisotropy energy
2
First-order surface-anisotropy energy
3
Mixed contribution to the energy
4
Effective one spin problem (EOSP) approximation
4
Numerical method
5
Effective energy landscapes of spherical nanoparticles
6
Effective energy landscapes of elongated nanoparticles
7
Effective energy landscape of an octahedral nanoparticle
8
Effective energy landscape in cobalt nanoparticle
9
Conclusions
Conclusiones
Rocio Yanes
