From the French word aimantation, the term magnetization is used to describe the act and result of magnetizing . East verb , meanwhile, serves to highlight the magnetic peculiarity of a body . That's why magnetization and magnetization They are concepts that are accepted as synonyms.
Magnetization usually occurs when a magnetic field over a element . Magnetic field means the area or sector of the surface where an electric charge, when moving at a certain speed, supports the consequences of a force which can be considered both proportional and perpendicular to speed and countryside magnetic.
In some materials, magnetization is already achieved even in the absence of an external magnetic field. That is the case of ferromagnetic materials, such as iron , he nickel , he cobalt , the magnetite , he gadolinium and the dysprosium . The magnetization can be positive (reinforces the magnetic field inside the body) or negative (the field weakens inside the material).
When it comes to calculating the magnetization, we must resort to three fundamental components for this, as they will give us the results we expect. Specifically, we will have to make use of the magnetic dipole moments that refer to the linked charges, to the average of what is the magnetic field of microscopic type and finally to what is known as magnetic excitation.
Specifically, this last aspect cited, which is scientifically represented through an H, which refers to the set of magnetic poles and also of free currents.
It is called magnetism to the phenomenon of physical character that causes certain elements to exert attractions or repulsions on other products or surfaces. When the materials have easy to detect magnetic properties, as in the case of the aforementioned iron, nickel and cobalt, they are known as magnets . It is important to keep in mind, however, that all materials receive a certain degree of influence in the presence of a magnetic field, although this influence has more or less incidence depending on the case.
You can distinguish, in short, between permanent magnets (which maintain their magnetism despite the absence of an external magnetic field) and the temporary magnets (which only have magnetization when they are located in a magnetic field).
It is important to underline, in addition to all that has been stated so far, that there are three fundamental methods to achieve this magnetization:
Induction. This system consists of placing small bars of steel or iron in the place near where a magnet of great power is located.
Rubbing. As direct contact magnetization, this process is also known where what is done is to rub the ends of the iron or metal element that we want with the poles of the corresponding magnet.
By electric current. Creating a coil, a key wound on a piece of iron, is the basis of this method because what it will do will become a perfect electromagnet.
However, although these three are the most frequent systems, there are many others to achieve this magnetization. Thus, another equally relevant is to achieve it through the continuous rotation of the body in question with which one is working.