Title :
Hysteresis and relaxation effects in magnetic materials
Author_Institution :
Ist. Elettrotecnico Nazionale Galileo Ferraris, Torino, Italy
fDate :
9/1/2000 12:00:00 AM
Abstract :
The connection between hysteresis and time effects due to thermal relaxation is studied in the framework of hysteresis modeling. The system with hysteresis is described as the superposition of elementary contributions distributed in energy levels and energy barriers. A set of general laws, connecting loop shapes and time relaxation patterns, are derived independently of the details of the distributions. Limits and possible extensions of the approach are discussed in connection with simple models of the magnetization process
Keywords :
magnetic aftereffect; magnetic hysteresis; magnetic materials; energy barrier; energy level; hysteresis loop; magnetic material; magnetic viscosity; magnetization; thermal relaxation; time effect; Coercive force; Energy barrier; Energy states; History; Magnetic force microscopy; Magnetic hysteresis; Magnetic materials; Magnetization processes; Shape; Viscosity;
Journal_Title :
Magnetics, IEEE Transactions on
