電流板磁気バブルデバイスの力学模型による性能評価

抄録

A simple mechanical device, or model, has been constructed for the rapid simulation of magnetic bubble domain current-sheet devices. The device consists of a small ferrite magnet (5 mmφ), layers of perforated aluminum films whose sizes match the diameter of the magnet, and a drive-current generator composed of standard TTL packages and relays. The magnet is placed in a light plastic boat, which is floated on the surface of a viscous fluid. The current generator provides sequenced electric currents with amplitude ranging between 1 and 10 A and duration between 1 and 30 s. The device has been applied to implement dynamic reallocation loops in dual perforated current-sheets, and several loop configurations, all operational on the mechanical model, have resulted. The course of improvement leading to the final loop configurations is given together with the result of preliminary experiment showing the validity of the model.