The energy (per unit volume) required to magnetize a ferromagnetic material to saturation (Es) is defined by the following equation:

That is, Es is equal to the product of μ0 and the area under an M versus H curve, to the point of saturation referenced to the ordinate (or M) axis-for example, in Figure 20.17 the area between the vertical axis and the magnetization curve to Ms. Estimate Es values (in J/m3) for single-crystal nickel in [100], [110], and [111] directions.

Transcribed Image Text:

wHOH dM E,-