6533b837fe1ef96bd12a2a34
RESEARCH PRODUCT
Thermal fluctuations and longitudinal relaxation of single-domain magnetic particles at elevated temperatures
Oksana Chubykalo-fesenkoDmitry A. Garaninsubject
Materials scienceCondensed matter physicsStatistical Mechanics (cond-mat.stat-mech)Numerical analysisRelaxation (NMR)NanoparticleThermal fluctuationsFOS: Physical sciencesCondensed Matter PhysicsElectronic Optical and Magnetic MaterialsMagnetizationMagnetic nanoparticlesSingle domainAnisotropyCondensed Matter - Statistical Mechanicsdescription
We present numerical and analytical results for the swiching times of magnetic nanoparticles with uniaxial anisotropy at elevated temperatures, including the vicinity of T_c. The consideration is based in the Landau-Lifshitz-Bloch equation that includes the relaxation of the magnetization magnitude M. The resulting switching times are shorter than those following from the naive Landau-Lifshitz equation due to (i) additional barrier lowering because of the reduction of M at the barrier and (ii) critical divergence of the damping parameters.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2004-12-28 |