What is magnetic permeability?

Some materials are magnetized when they are located in a magnetic field; The ability to magnetize is called magnetic permeability. An example is the rubbing of a piece of iron with a magnet: iron becomes magnetized and has its own magnetic field, which means it has a certain degree of magnetic transmission.

Many substances, even water, have a certain degree of magnetic permeability. When the material is placed in the magnetic field, it interacts with the fields in any way. The permeability of the substance describes the way in which the material reacts and the effects of the field on the material. The substance with magnetic permeability is either magnetized in the direction of the field or in opposition to it. Thus, depending on the permeability, the substance will be attracted or reflected in the field.

Measurement of throughput

Scientists represent magnetic permeability with a Greek letter, MU (μ). The international units system (SI) measures the permeability in Henres per meter (H/M) or in Newton on the amplere to the second (n/and 2 ). Air in vacuum, alsocalled free space, it has a constant value called magnetic constant. This value is represented by the symbol of μ _{0 and is awarded as 4π × 10 --7 h/m, which is about 1.2566 × 10}

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h/m. The numeric value is the same when it is measured in n/a 2 .

magnetic permeability, on the other hand, is not a constant figure; Rather, it changes with the position of the material in relation to the magnetic field, the frequency of field, humidity, temperature and other factors. Knowledge of material permeability can also be useful for various industries, such as high -permeability materials are used in various applications, including electromagnets, transformers and inductors.

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substance can also be characterized depending on their magnetic permeability and the level of substance permeability is listed as a net number. If the substance is classifiedAs a paramagnetic, its permeability is measured as a little more than one and such substances are slightly attracted to magnets. If the substance is classified as diamagnetic, the permeability is measured as less than one and such a substance will be repelled by a magnet.

Pheromagnetic metal permeability

The material can also be classified as ferromagnetic; Pheromagnetic metals have the greatest permeability of all substances and become magnetized when exposed to a magnetic field. When the magnetic field in which the ferromagnetic substance is exposed to an increase, magnetic permeability increases until it reaches its maximum values, at this point decreases. Some ferromagnetic materials become hard or soft magnets; In materials that become soft magnets such as Those materials used in electromagnets, the material loses its magnetism when the magnetic field is removed. However, hard magnets are difficult to magnetize but remain magnetized even if the magnetic field isremoved.