Magnetic Fields: Unraveling Their Mysteries

Understanding Magnetic Fields Hey there! Let’s chat about magnetic fields for a bit. You’ve probably encountered them from time to time, maybe while playing with magnets or using a compass. But what exactly are they, and why should you care about them? Magnetic fields are vector fields that surround magnets, electric currents, and even changing electric fields. Imagine them like invisible lines of force that exert their influence on magnetic materials and charged particles that happen to be around them. These force lines are called field lines, and they give you a pretty good picture of how a magnetic field

Types of magnetisation

The respective type of magnetisation depends on the desired application, shape and material of the magnets used. So, for example, when using different magnetisation types with otherwise identical shapes, differences in the relationship between adhesive force and air gap are achieved. Also, the used raw magnet plays a significant role. If it is made of an anisotropic material, the first four magnetisation types mentioned below may generally be used. If the magnet is made of an isotropic material, then, as a rule, the last two types of magnets listed below may be used. Axial Axial according to sectors Two-poles Magnetized

Demagnetisation curve

The demagnetisation curve The demagnetisation curves are located in the second quadrant of the hysteresis curve. These curves indicate the differences between the Neodynium Iron Boron, the Samarium Cobalt, the Alnico and the ferrite magnets, that we use in our magnetic assemblies. Remanence B is the magnetic induction value which is use in the magnet according to operating point. Coercitive field Hc indicates the necessary demagnetising fi eld in order to cancel the induction within the magnet. This can occure in case of demagnetising fields. To simplify one can say that: » The higher the remanence is the stronger the

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