Author
Home > Science > What is the Difference Between Magnetization and Demagnetization?

Guilherme Mazui

•3 minutes to read

What is the Difference Between Magnetization and Demagnetization?

🆚 Go to Comparative Table 🆚

Magnetization and demagnetization are processes related to the changes in magnetic properties of magnetic materials. The main differences between them are:

  1. Magnetization: This is the process of developing the properties of a magnet in a magnetic substance, such as a piece of iron or steel. It can be done by exposing the material to an electric current, using another magnet, or by mechanically stroking the material in a specific direction. Magnetization is the vector field expressing the density of permanent/induced magnetic dipole moments regarding a magnetic material.
  2. Demagnetization: This is the removal of the magnetic property of a magnet. It can be achieved by hitting the magnet heavily with a hammer, heating it at high temperature, or placing two magnets with the same poles facing each other. Demagnetization is the creation of a magnetic field by the magnetization in a magnet, with the key difference being that it is the removal of the magnetic property of the magnet.

These processes are essential in understanding and manipulating magnetic materials for various applications, such as the creation of electromagnets, speakers, telephone receivers, and refrigerator door magnets.

On this page
  • What is the Difference Between Magnetization and Demagnetization?
  • Comparative Table: Magnetization vs Demagnetization

    • Comparative Table: Magnetization vs Demagnetization

    Here is a table summarizing the difference between magnetization and demagnetization:

    Magnetization Demagnetization
    The process of developing the properties of a magnet in a magnetic substance. The removal of the magnetic properties of a magnet.
    Occurs when a magnetic substance, like iron, is exposed to a magnetic field, such as by electric current or by touching with another magnet. Can occur by hitting a magnet heavily with a hammer, heating a magnet at high temperature, or placing two magnets with the same poles facing each other.
    Results in an increase in the magnetization of the material. Causes a decrease in the magnetization of the material.
    In the magnetizing process, a magnetic field develops around the solenoid windings first, and then expands and decays with time. The magnetic field created by the magnetization in a magnet is responsible for demagnetization.
    Read more:

    Guilherme Mazui

    Guilherme Mazui is graduated in journalism from the Federal University of Minas Gerais (UFMG) and a master's degree in Communication from the University of São Paulo (USP). In addition, he has experience in advertising writing and has worked as a content editor in several companies.