The energy (per unit volume) required to magnetize a
Chapter 20, Problem 20.23(choose chapter or problem)
The energy (per unit volume) required to magnetize a ferromagnetic material to saturation (Es) is defined by the following equation: Es = 3 Ms 0 m0HdM that is, Es is equal to the product of m0 and the area under an M-versus-H curve, to the point of saturation referenced to the ordinate (or M) axisfor 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 iron in [100], [110], and [111] directions.
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