Analysis of Powerful Magnet

Let's analyze the powerful magnets mainly from the following aspects:

1. Analysis on the magnetic field formation principle of powerful NdFeB magnets

Powerful NdFeB magnets, like electricity, cannot be seen or felt. The magnetic force can only be felt when iron is close to it. Magnets are easy to make and have a wide range of uses. Everyone knows that there is a gravitational field between matter. Similar to a magnetic field, it is a field that fills the space around the magnetic poles. The size of the magnetic field can be expressed by the number of imaginary magnetic field lines. Where the magnetic field lines are denser, the magnetic field is stronger. On the contrary, where the magnetic field lines are sparse, the magnetic field is weaker.

When a powerful magnet moves, the charged particles will experience a force called the Lorentz force in the magnetic field. The magnetic field strength of charged particles in different magnetic fields is determined by the strength of the magnetic force exerted by Loren magnets. Tesla is an international unit specifically used to measure magnetic flux density. The density of magnetic flux is the basic physical quantity that describes its magnetic field, and the magnetic field intensity is the auxiliary quantity that describes the magnetic field.

2. A powerful magnet is called a permanent magnet, so does it really not demagnetize?

Powerful magnets are called permanent magnets. Logically speaking, demagnetization has nothing to do with time. There are two main reasons would cause magnet demagnetization, temperature and oxidation. If the temperature is too high and exceeds the Curie temperature of 300 degrees Celsius, it will lose magnetism. If it is not well protected and oxidized, it will lose magnetism, and this is the biggest reason for magnet failure during use. Powerful magnets have the characteristics of small size, light weight and strong magnetic properties.