2014/12/31 by M. G. Phelps, Karen L. Livesey, K. L. Livesey +3 · 10 citations
Engineering · Physics and Astronomy · #Amplitude #Characterization and Applications of Magnetic Nanoparticles #Computer science #Condensed matter physics #Larmor precession #Magnetic field #Magnetic nanoparticles #Magnetic properties of thin films #Magnetization #Magnetization dynamics #Nanoparticle #Nonlinear system #Nuclear magnetic resonance #Optics #Physics #Position (finance) #Precession #Quantum mechanics #Theoretical and Computational Physics #Transient (computer programming) #cond-mat.mes-hall #cond-mat.mtrl-sci #nlin.CD
paper · pdf · doi:10.1209/0295-5075/109/37007
published in Europhysics Letters (EPL) 109(3), 37007 (Institute of Physics) · EPL Preprint
openalex publication_date 2015/02/01 · arxiv created 2015/02/03 · arxiv updated 2015/06/23 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The dynamical motion of the magnetization plays a key role in the properties of magnetic materials.If the magnetization is initially away from the equilibrium direction in a magnetic nanoparticle, it will precess at a natural frequency and, with some damping present, will decay to the equilibrium position in a short lifetime.Here we investigate a simple but important situation where a magnetic nanoparticle is driven non-resonantly by an oscillating magnetic field, not at the natural frequency.We find a surprising result that the lifetime of the transient motion is strongly tunable, by factors of over 10000, by varying the amplitude of the driving field.