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What is the Curie temperature of a permanent ferrite magnet? What is the demagnetization temperature? Before answering this question, let's take a look at an introduction to the Curie temperature.
What is the Curie temperature?
Curie temperature refers to the temperature at which a material can change between a ferromagnet and a paramagnet. Below the Curie temperature, the substance becomes a ferromagnet, and the magnetic field associated with the material is difficult to change. When the temperature is higher than the Curie temperature, The substance becomes a paramagnet, and the magnetic field of the magnet is easily changed with the change of the surrounding magnetic field.
The picture is a multi-pole magnetized ring ferrite
What is the Curie temperature of a permanent magnet ferrite?
It is reported that the Curie temperature of ferrite is around 450°C, usually greater than or equal to 450°C, and the hardness is around 480-580.
How to demagnetize ferrite magnet?
If the ferrite is demagnetized, it is more troublesome, because the required temperature is very high, and if it needs to be demagnetized, it needs to be heated to 900 ℃ and reheated. Just above the Curie point is not clean. If you want to retreat, you can use the method of AC attenuation to demagnetize.
Curie temperature introduction of other magnets;
Maximum working temperature and Curie temperature of neodymium magnet
This 1mmx1mm miniature circular magnet has a compact size and a surface magnetic field of approximately 2900 Gauss, making it suitable for precision applications with high requirements for magnet size....
This product is a miniature round magnet, made of rare earth NdFeB magnets, belonging to the ultra-small size magnet series, using N35 grade, the specific size is 1.5mm diameter, 1mm thickness, axial magnetization, surface nickel coating, tolerance ±0.05, such as If you are interested in this small magnet product, you can contact us to customize it for you....
Customers from the United States, the United Kingdom, Australia, Japan, Poland and other customers are looking for ferrite cylindrical magnets. Welcome to contact the Courage magnet manufacturer. Our company is located in Dongguan, China. There are many ready-made sizes and low prices. Like the main picture...
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7.4x6x5mm Ferrite Small Block Magnet Introduction，Material: Hard Ferrite (Ceramic)，Shape: Block / Rectangle / Bar，Coating: No Coating，Grade (Chinese Stardard): Y30，Operating temperature: -40°C to 250°C，Delivery time: 7-15 days，Magnetization direction: thickness....
U-shaped neodymium magnets are a type of high-performance permanent magnet material with a structure resembling the letter ‘U’. Manufactured from sintered neodymium-iron-boron, they are characterised by high magnetic energy product....
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