Atomistic simulation of static magnetic properties of bit patterned media
| Autor: | O. D. Arbeláez-Echeverri, J.D. Agudelo-Giraldo, Elisabeth Restrepo-Parra |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Work (thermodynamics) Materials science Condensed matter physics Monte Carlo method Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics Landau–Lifshitz–Gilbert equation Electronic Optical and Magnetic Materials Matrix (mathematics) 0103 physical sciences Patterned media Statistical physics 010306 general physics Anisotropy Langevin dynamics Phase diagram |
| Zdroj: | Physica E: Low-dimensional Systems and Nanostructures. 83:486-490 |
| ISSN: | 1386-9477 |
| DOI: | 10.1016/j.physe.2015.12.016 |
| Popis: | In this work we present a new design of Co based bit pattern media with out-of-plane uni-axial anisotropy induced by interface effects. Our model features the inclusion of magnetic impurities in the non-magnetic matrix. After the material model was refined during three iterations using Monte Carlo simulations, further simulations were performed using an atomistic integrator of Landau–Lifshitz–Gilbert equation with Langevin dynamics to study the behavior of the system paying special attention to the super-paramagnetic limit. Our model system exhibits three magnetic phase transitions, one due to the magnetically doped matrix material and the weak magnetic interaction between the nano-structures in the system. The different magnetic phases of the system as well as the features of its phase diagram are explained. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect