What is the magnetic susceptibility of a superconductor?

The materials having negative magnetic susceptibility are

Curie temperature is the temperature above which

The Curie temperature $T_{C}$ represents:

Suppose a small cylinder of a paramagnetic substance and a small cylinder of a diamagnetic substance are placed between the (parallel) pole pieces of a strong magnet,so that they are aligned along the direction of the field lines. Will they attract or repel each other?

Ferromagnetic materials have . . . . . . permeability and . . . . . . retentivity.