Magnetization and demagnetization

Magnetization and demagnetization

Ferrite magnet materials can be magnetized in the following ways:

Heating the object above its Curie temperature, allowing it to cool in a magnetic field and hammering£© it as it cools. This is the most effective method, and is similar to the industrial processes used to create permanent magnets.

Magnetized materials can be demagnetized in the following ways:

Heating a magnet past its Curie temperature; the molecular motion destroys the alignment of the magnetic domains. This always removes all magnetization.

Types of permanent magnets

Magnetic metallic elements

We also provide neodymium magnet ceramic magnet, alnico magnet, SmCo magnet, rubber magnetand magnetic products. These products are widely used in micro-motor, motor, computer, instrument, meter, automobile, motorcycle, horologe, office equipment, toy, magnetic therapy device and daily life industries.

Xiamen Everbeen Magnet Electron Co.,Ltd. http://www.china-magnet.net

Add:Unit H, 4F Rihua Mansion, No. 8 Xinfeng 2nd road, Torch Hi-Tech Zone, Xiamen, China.

Tel:0086-592-5781916

Fax:0086-592-5123653

E-mail:sales@china-magnet.net

Many materials have unpaired electron spins, and the majority of these materials are paramagnetic. When the spins interact with each other in such a way that the spins align spontaneously, the materials are called ferromagnetic (what is often loosely termed as magnetic). Because of the way their regular crystalline atomic structure causes their spins to interact, some metals are (ferro)magnetic when found in their natural states, as ores. These include iron ore (magnetite or lodestone), cobalt and nickel, as well the rare earth metals gadolinium and dysprosium (when at a very low temperature). Such naturally occurring (ferro)magnets were used in the first experiments with magnetism. Technology has since expanded the availability of magnetic materials to include various man made products, all based, however, on naturally magnetic elements.

Tags: neodymium magnets Magnetization£»demagnetization Smco magnets