Magnetic materials hysteresis loops

Magnetization and Hysteresis Loops for Hard Magnetic Material... 

Magnetization and Hysteresis Loops for Hard Magnetic Material. Magnetization and Hysteresis Loops for Soft Magnetic Material. ... 

Figure 12.3 Typical B (magnetic induction) versus H (magnetizing field) hysteresis loop behavior for a ferrite material. 

Figure 6.55 Comparison of hysteresis loops for soft and hard magnetic materials. From K. M. Ralls, T. H. Courtney, and J. Wulff, Introduction to Materials Science and Engineering. Copyright 1976 by John Wiley Sons, Inc. This material is used by permission John Wiley Sons, Inc.

Magnetization hysteresis curves for the powder samples of Sm2Fei7N>, are compared to that of the raw powder material (Figure 10.10), and their fundamental magnetic properties are summarized in Table 10.5. The powder sample obtained by ball-milling in pure hexane showed only a small hysteresis loop (curve a), and the Br and iHc values were 1.00 T and... 

Figure 2 shows the two hysteresis loops for a medium and a head material. The coercivity, FT, the saturation magnetization, M or induction, Bs, remanent magnetization, M or induction, B and the permeability, JJ, differ for the two materials. 

As you can also see in figure 11.5.4, an amount of magnetization remains behind in the material when the external field is no longer present. On increasing the value of the negative external field, B falls to a value corresponding with point E in the curve. The total curve is called a hysteresis loop. 

Fig. 11.5.5 Hysteresis loop of a soft (a) and a hard (b) magnetic material.

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