Superamic (Super Ceramic)

Superamic was invented in 2051 and was a key part in making the maglev train project economical. It naturally doesn't carry any charge or produce any magnetic field, but when a magnetic field is applied to it, it uses the field that would pass through it to produce the opposite field.

The two incredible properties of Superamic are:
1. Any charged particle that approaches it, is repelled by it
2. No magnetic field can pass through it, providing it with incredible magnetic insulation properties (technically half the field passes through it and the other half is converted to the opposite field, cancelling it out).

Note that a gram of Superamic can only produce so much magnetism, so an appropriate level of thickness is required to be effective.

Fission pile and fligs are both lined with a thin layer to act as magnetic confinement.