Title :
State changes in a moving bubble by a pulsed bias field
Author :
Bettinger, T.W. ; Nyenhuis, J.A. ; Friedlaender, F.J.
Author_Institution :
Sch. of Electr. Eng., Purdue Univ., West Lafayette, IN, USA
fDate :
9/1/1989 12:00:00 AM
Abstract :
A bubble was translated in continuous circular motion in a rotating gradient experiment. Bias pulses were applied to a circulating S=1 bubble. As a result of the pulses, a Bloch line pair was added to the S=1, p=0 bubble, and a Bloch line pair was either added to or subtracted from the S=1, p=2 bubble. The risetime and pulse amplitude needed to cause a state change were measured. The experimental data agreed with calculated values for risetimes less than 150 ns in duration. Data from the annihilation of Bloch lines in the S=1, p=2 bubble yielded information on the Bloch line mobility
Keywords :
magnetic bubbles; magnetic domain walls; 150 ns; Bloch line mobility; Bloch line pair; annihilation of Bloch lines; continuous circular motion; pulse amplitude; pulsed bias field; risetime; rotating gradient experiment; state change; AC generators; Cities and towns; Conductors; Current supplies; DC generators; Frequency; Gradient methods; Pulse generation; Pulse measurements; Velocity measurement;
Journal_Title :
Magnetics, IEEE Transactions on
