Rotation of the magnetization process magnet magnetic moment

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Magnet magnetic moment (or magnetization vector) is the rotation of the magnetization and demagnetization

process is one important way. Permanent magnets within the domain rotation may be uniform rotation moment,

is non-uniform rotation can be. Coherent rotation refers to the so-called atomic magnetic moments within

domains uniformly shifted outside the magnetic field direction.suspension magnet
Including reversible magnetization rotation and irreversible turning action. In general, low field has reversible

rotation. For the uniaxial magnetic anisotropy, have irreversible move two conditions: (1) the magnetic field

direction and the magnetization direction of the original angle of the mouth 2) should be greater than the critical

magnetic field Ho.
    2-20 shows the single-domain body, M along the easy axis of magnetization fp x-axis in the positive direction. tube magnets

Now the negative direction along the z-axis plus anti-magnetizing field, so that the magnetization reversal. Located

in the magnetization reversal field for heads, M, deviate from the easy axis of the altercation, the total energy of the

system is that it shows that single-domain uniaxial anisotropy energy body and the mouth of the relationship with

the child used to represent Figure 2-21. When N is constant, E is the value to be the minimum. That is, when the

magnetic field increases from 0 to 2K /, n into knowledge, past, single domain magnetic oyster meat body

strength has been stuck in the mouth = 0. Department. When the magnetization reversal field once to 2K, Tou oM, motor magnets

when the moment immediately reversed 180. (8 = 1 This field Ho is its critical single domain body axis which is

the coercive force of a general expression.