Study on Effects of Dipole-dipole Interactions in Nd_2Fe_{14}B thin film Based on Stochastic Cut-off Method with New Efficient Algorithm

Abstract

We developed a new algorithm for the stochastic cutoff method, which is a Monte Carlo method for long-range interacting systems. The present new algorithm is efficient for complicated lattice structures, e.g., amorphous and also materials with complicated unit cell structure. In addition, it has an advantage in a high temperature region. With the present method, we investigated an atomistic model of the permanent magnet Nd 2 Fe 14 B with dipole-dipole interactions to study the effect of the anisotropy of the Fe ions on the magnetization structure in the thin film system. It has revealed that the anisotropy of the Fe ions plays an important role to maintain the uniaxial magnetization structure at high temperatures.

9 pages, 7 figures

References in corpus (4)

• Order-N Cluster Monte Carlo Method for Spin Systems with Long-range Interactions
• Monte Carlo analysis for finite temperature magnetism of Nd${}_2$Fe${}_{14}$B permanent magnet
• Theoretical evaluation on the temperature dependence of magnetic anisotropy constants of Nd2Fe14B - Effects of exchange field and crystal field strength -
• Parallelized Stochastic Cutoff Method for Long-Range Interacting Systems

Cited by in corpus (6)

• Anisotropy of exchange stiffness based on atomic-scale magnetic properties in rare-earth permanent magnet Nd${}_2$Fe${}_{14}$B
• Nontrivial temperature dependence of ferromagnetic resonance frequency for spin reorientation transitions
• The effect of the surface magnetic anisotropy of the neodymium atoms on the coercivity in the neodymium permanent magnet
• Temperature Dependence of Magnetocrystalline Anisotropy in Itinerant Ferromagnets
• Temperature-field phase diagram of the two-dimensional dipolar Ising ferromagnet
• Phase diagram of the dipolar Ising ferromagnet on a kagome lattice