Местоположение издательства:Piscataway, NJ, United States
Первая страница:GP-06
Последняя страница:GP-06
Аннотация:The results of experimental and theoretical investigations of magnetostatic properties of the amorphous wires Fs77.5Si7.5B15 and (Со0.94Fe0.06)72.5Si12.5B15 with diameter 130mkm and different lengths were presented. The strong dependence of magnetization reversal processes in amorphous wires with positive magnetostriction >0 on their length has been already reported. To clarify the role of magnetostriction on magnetostatic properties we investigated the remagnetization in wires exhibiting positive (Fe-based) as well as negative (Co-based) magnetostriction. The measurements were performed by Vibrating Sample Anisometer in fields up to 8 кОе. Magnetic field was oriented in parallel (H||) or perpendicularly (H) to the wire axis. Two magnetization components M|| and M were determined at both field orientations.
To explain the results we calculated the magnetization distribution in a core and in an outer shell of amorphous wire with different lengths. It is shown that the radius of a wire core may be smoothly reduced to zero due to demagnetizing field of the magnetic charge near the wire ends with length decreasing. The twisting of the magnetization distribution in the inner core of wire with <0 was simulated. The obtained dependencies of magnetostatic parameters on wires length are in a qualitative agreement with the experimental data.
