Shielding Effect of Double-Layered Open-Type Magnetic Shield Structure

A two-layer open-type magnetic shield was constructed by using cubic open-type magnetic shield structures in a nested arrangement. Measurements were conducted in order to verify the performance of the magnetic shield in terms of preventing magnetic field leakage from the interior towards the exterior. Data regarding the distribution of leaked magnetic fields around the structure and the distribution of the magnetic flux density in the magnetic material is presented.