hyperfine.demagnetization.N_cuboid

hyperfine.demagnetization.N_cuboid(a: float, b: float, c: float) → float

Effective demagnetizing factor for a rectangular cuboid.

Calculate the (effective) demagnetization factor N for a rectangular cuboid using an approximate analytic formula that interpolates between the limiting cases of an infinitely thin (c -> 0, N -> 1) and an infinitely thick (c -> +inf, N -> 0) sample. The field is assumed to be applied parallel to the c-axis.

Calculated using Eq. (22) from:

R. Prozorov and V. G. Kogan, “Effective demagnetizing factors of diamagnetic samples of various shapes”, Phys. Rev. Appl. 10, 014030 (2018). https://doi.org/10.1103/PhysRevApplied.10.014030

Parameters:

• a – Length of the rectangular cuboid.

• b – Width of the rectangular cuboid.

• c – Height of the rectangular cuboid.

Returns:

The demagnetization factor N.