2003/01/17 by S. I. Denisov, T. V. Lyutyy, K. N. Trohidou · 3 citations
Engineering · Physics and Astronomy · #Characterization and Applications of Magnetic Nanoparticles #Magnetic properties of thin films #Theoretical and Computational Physics #cond-mat
paper · pdf · doi:10.1103/physrevb.67.014411
published as PHYSICAL REVIEW B 67, 014411 (2003) · 21 pages, 4 figures
openalex publication_date 2003/01/17 · arxiv created 2003/05/15 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We study the slow phase of thermally activated magnetic relaxation in finite two-dimensional ensembles of dipolar interacting ferromagnetic nanoparticles whose easy axes of magnetization are perpendicular to the distribution plane. We develop a method to numerically simulate the magnetic relaxation for the case that the smallest heights of the potential barriers between the equilibrium directions of the nanoparticle magnetic moments are much larger than the thermal energy. Within this framework, we analyze in detail the role that the correlations of the nanoparticle magnetic moments and the finite size of the nanoparticle ensemble play in magnetic relaxation.