The Néel Magnetic Relaxation Dynamics in Nanoparticle Systems - Phenomenological Approach versus Stochastic Approach

• Authors: M. Osaci
• Languages of publication: EN

Abstracts

EN

In nanomagnetism, the studies of magnetic nanoparticle systems are of particular interest from both experimental and theoretical points of view. Experimentally, the measurements made on such a system are hard to interpret. It is very difficult to distinguish the effect of the magnetic dipole interactions from the effects of size distribution or effective magnetic anisotropy constants. In this respect, the simulation models can help. This paper presents a study comparing the two conventional approaches, using simulation models for the magnetic relaxation dynamics of nanoparticle systems, i.e. a phenomenological Ising-type approach, on two levels, and a stochastic approach. The paper also shows a way of using these approaches in creating a model to simulate the Néel magnetic relaxation time for aligned magnetic nanoparticle systems.

Keywords

EN

72.15.Lh; 75.50.Tt; 78.20.Bh

Discipline

• 75.50.Tt: Fine-particle systems; nanocrystalline materials
• 72.15.Lh: Relaxation times and mean free paths
• 78.20.Bh: Theory, models, and numerical simulation

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2016
• Volume: 129
• Issue: 3
• Pages: 323-328

Dates

published

2016-03

(unknown)

03-02

received

2013-11-11

(unknown)

2016-01 30, 2016

Contributors

author

M. Osaci

• University "Politehnica" of Timisoara, Engineering Faculty of Hunedoara, Department of Electrical Engineering and Industrial IT, Revolutiei no. 5, Hunedoara, Romania

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Identifiers

DOI

10.12693/APhysPolA.129.323