Thanks for the info. I set up a simple test with a permanent magnet, and it works just fine. So, I am hoping that with a field oscillating at sufficiently low frequency I will get similar behavior.
I am a chemical engineer, not a physicist, so I am a bit rusty on my electromagnetics.
I need to set up a fluctuating magnetic field inside of a stainless steel tube (hopefully using a pair of electromagnets outside the tube), and I am wondering if the field will penentrate through the tube...