What is magnetic energy and how is it generated?
We can generate a large amount of magnetic energy by means of magnetic systems or products. You can consult our wide variety of magnetic solutions in ImagnetShop.
What is magnetic energy?
The term refers to the energy of a magnetic field. A definable amount of energy is available in all permanent magnets. On the basis of the stored energy, the magnet is classified according to its quality.
How is magnetic energy generated?
The energy of a magnet is reduced as it works, for example, when it attracts metal. If the work is done in the opposite direction, i.e. in the example where the metal is removed again, the energy is refilled.
The forces of a magnet are proportional to the energy of a magnet. You can measure the energy of a magnet with the help of the energy product.
In physics, the energy of a magnet is familiar, that is, it is the energy that is in a magnet. In order for a magnetic field to be generated, one must first work. The energy in a magnetic field is the energy required to align the elementary magnets of a material in parallel. Energy is, therefore, a work, which is required for the rotation of atomic spins. If the elementary magnets of a material are aligned, they have a potential energy, which is also called magnetic field energy.
Which magnets can generate magnetic energy?
The amount of magnetic energy present after parallel alignment of the elementary magnets in the magnets depends mainly on the material. The magnitude of this energy is proportional to the area under the hysteresis curve.
You can calculate the energy of a magnetic field with the help of the energy product. This represents the reliability of a magnet. With the magnetic field, the energy increases quadratically, i.e. a magnetic field that is twice as large as another, but has the same extension, has four times as much energy.
The change of energy of a magnetic field in a certain direction corresponds to the force acting in this direction. In principle, this corresponds to a minimization of the energy of a magnet. The forces are maintained until the energy dissipates in a certain direction and disappears when the energy is exhausted. When two bodies approach, the energy of a magnetic field is reduced. In addition, a force acts, the so-called attraction between bodies, which improves the decrease of the energy of the magnetic field. An example of this is the approach of a magnetic north pole to a magnetic south pole or the approach of an iron body to a magnet.
However, when you approach two equal poles, i.e. the south and south poles, or the north and north poles, they repel each other and a force acts that amplifies the energy of a magnetic field. The permeability of the material reduces the energy in the material by the factor μ. If the airspace disappears, i.e. when the plate and magnet touch, the energy in this space is exhausted. But the energy of a magnet does not disappear forever, but accumulates again after it separates.
The strongest magnets are neodymium magnets. The neodymium-iron-borne alloy of the Nd2Fe14B composition, a type of neodymium magnet allows very strong magnets, as they are the strongest permanent magnets today.