Title :
The effect of particle size on the thermal switching characteristics of metal particle tapes
Author :
Stinnett, S.M. ; Doyle, W.D.
Author_Institution :
Dept. of Phys. & Astron., Alabama Univ., Tuscaloosa, AL, USA
fDate :
7/1/1998 12:00:00 AM
Abstract :
The effect of particle length on the magnetic viscosity and high speed switching characteristics were studied for four experimental metal particle (MP) tapes. The particle length varied from 80 nm to 340 nm with diameters ~20 nm. The magnetic viscosity and activation volume were not sensitive to particle length. High speed switching measurements show only a moderate increase in the remanent coercivity at 10-8s. Results are compared to new models of magnetization reversal in acicular particles
Keywords :
coercive force; ferromagnetic materials; magnetic particles; magnetic switching; magnetic tapes; magnetisation reversal; particle size; remanence; thermal stability; 20 nm; 80 to 340 nm; acicular particles; activation volume; high speed switching characteristics; magnetic viscosity; magnetization reversal; metal particle tapes; micromagnetics; models; particle length; particle size effect; remanent coercivity; small ferromagnetic particles; thermal switching characteristics; Coercive force; Magnetic anisotropy; Magnetic field measurement; Magnetic materials; Magnetic switching; Magnetization; Perpendicular magnetic anisotropy; Pulse measurements; Velocity measurement; Viscosity;
Journal_Title :
Magnetics, IEEE Transactions on
