Characteristics of Superconductors

[Phrak]

What are the permeability and permissivity of type I superconductors?

[Phrak]

Type I superconductors expell magnetic fields as they pass below critical temperature.

I think this means that an impressed field H would result in a magnetic field,
B=H \mu =0 , so that mu is zero.

I dont know about the permissivity \epsilon.