What are the main factors that affect magnetic?

The factors that influence magnetism play a key role in many industrial and technological applications. Understanding these factors not only helps optimize the use of magnetic materials, but also improves the performance and efficiency of equipment.

This article will explore the main factors that affect magnetism, including the composition of the material, temperature, the strength of the external magnetic field, etc. Through an in-depth analysis of these factors, you will better understand how to achieve ideal magnetic properties in various applications.

(1) The environment temperature. Each grade of the magnet has a corresponding temperature limit. Since the sintered NdFeb has a negative temperature coefficient (αBr<-0.13%/℃,αHcj<-0.6%/℃), the instantaneous maximum temperature and continuous maximum temperature of the use environment will produce different degrees of demagnetization of the magnet itself, including reversible and irreversible.

(2) The influence of cross the magnetic field. We all know that magnets are divided into N-pole S pole or single-sided multipole, which will produce a magnetic field. So if there is another magnetic field around the magnet, this will cancel out some of the magnetic force of the magnet. This is why magnets are demagnetized in normal temperature ranges.

(3)  Mechanical vibration. The material characteristics of the magnet are fragile, which may be rubbed into the product during electroplating or assembly, resulting in the wear of the magnet and the size of the magnet becoming smaller. This will cause the magnet to become less magnetic.

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