- Homework Statement
- How strong a magnetic field is necessary to magnetize an iron plate to its saturation magnetization for a field applied normal to the plate surface? Assume that iron has a relative permeability 200 and a saturation magnetization of 1700 emu/cm^3. If the field is applied in the plane of the plate, how large a field is required?
- Homework Equations
B = H + 4*pi*M
H (total) = Hd + H (applied)
I know that the field inside sample is a combination of the demagnetizing field and whatever applied field you may have. So these two fields together influence how big a field you need in order to magnetize the sample.