Magnetic bubble propagation using distributed electric currents
Abstract
The interaction between a magnetic bubble domain and a distributed current flowing in a neighboring nonuniform conducting sheet is proposed as the basis of a bubble drive. This technique eliminates the in-plane field and drive coils required by field-access circuits while avoiding the multiple connections required by conventional current-access schemes. Bubble propagation was achieved by exciting the overlay with an oscillating or rotating electric field. The resulting nonuniform current exerts forces on the bubble which are computed using the current-field interaction. A theoretical analysis is presented in which the forces, bubble potential energy, and the normal component of magnetic field averaged through the platelet thickness are expressed as double trigonometric series. The results are valid for conducting sheets of infinite extent whose conductivities vary periodically in the sheet plane. The operation of two specific overlay configurations was simulated on a computer.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- 1975
- Bibcode:
- 1975PhDT........49W
- Keywords:
-
- Bubbles;
- Current Distribution;
- Magnetic Domains;
- Computerized Simulation;
- Electric Fields;
- Magnetic Fields;
- Propagation Modes;
- Electronics and Electrical Engineering