Permittivity and permeability of ErAs, SI or any metamaterial

[antenna]

hi..i'm an undergraduate student.i'm working on my final year project. I've been looking for the permittivity and permeability of ErAs, SI or any metamaterial but i find it difficult to get.

i hope this forum could help me (n hope this forum is still active..hehe)
THANX!

 

[ZapperZ]

Not if you post in the wrong forum.

I've moved this to the Classical Physics forum.

BTW, "SI" and "ErAs" are metamaterial?

Zz.

 

[antenna]

im sorry.im just new here.
metamaterial of GaAs/ErAs
and i m looking for the permittivity and permeability
=)