Title :
Temperature- and time-dependent Preisach model for a Stoner-Wohlfarth particle system
Author :
Stancu, Alexandru ; Spinu, Leonard
Author_Institution :
Dept. of Electr., Alexandru Ioan Cuza Univ., Iasi, Romania
fDate :
11/1/1998 12:00:00 AM
Abstract :
In this paper, a dynamic (time and temperature dependent) Preisach model is described. In the Preisach plane one uses a double well potential distribution calculated with the Stoner-Wohlfarth model. Both static and dynamic interactions for a ultrafine particulate system are taken into account in order to simulate various magnetization processes, such as: field-cooled (FC), zero field-cooled (ZFC), thermo-remanent magnetization (TRM), magnetic relaxation in applied field (MR), and the major hysteresis loop (MHL) as a function of temperature. The results of the simulations are in good qualitative agreement with experimental data obtained for ferromagnetic ultrafine particulate systems
Keywords :
magnetic hysteresis; magnetic particles; magnetic relaxation; magnetisation; remanence; Stoner-Wohlfarth model; double well potential distribution; dynamic Preisach model; ferromagnetic ultrafine particulate system; field cooled magnetization; magnetic relaxation; major hysteresis loop; simulation; temperature dependence; thermo-remanent magnetization; time dependence; zero field cooled magnetization; Atmospheric modeling; Energy barrier; Helium; Magnetic hysteresis; Magnetization processes; Nonlinear dynamical systems; Potential well; Temperature dependence; Transmission line measurements; Viscosity;
Journal_Title :
Magnetics, IEEE Transactions on
