What are Temperature Coefficients of Permanent Magnets? A new approach for calculating the temperature coefficients of magnetic parameters is proposed in order to more accurately describe high temperature characteristics of magnetic materials. Using this new approach, the "true" (or instantaneous) temperature coefficient of any magnetic parameter at a specific temperature can be determined and a [...]
Samarium Cobalt vs Neodymium Magnets Samarium Cobalt magnets and Neodymium Iron Boron magnets are important Rare Earth Magnets. Many people want to understand how to use them, so we wrote this guide. Here we break down the important similarities and differences so you can quickly decide which is right for your application. Samarium Cobalt [...]
How to Judge the Quality of Sintered NdFeB Magnets? Sintered NdFeB permanent magnets, as one of the important substances to promote contemporary technology and social progress, are widely used in the following fields: computer hard disk, magnetic resonance imaging, electric vehicles, wind power, industrial permanent magnet motors, consumer electronics (CD, DVD, mobile phones, stereos, copiers, [...]
About Some Magnet Knowledge Permanent magnet material: The permanent magnet material is magnetized by an external magnetic field and does not disappear. It can provide a stable magnetic field to the external space. There are four common metrics for NdFeB permanent magnets: Remanence (Br) units are Tesla (T) and Gauss (Gs) 1Gs = 0.0001T A [...]
Magnet Temperature Effects Magnetic properties of all the permanent materials change with temperature. Remanence, and thus the magnetic flux a magnet produces, decreases in all magnetic materials with increasing temperature. Ultimately, at certain, for each material characteristic temperature the material becomes non-magnetic. This temperature is known as Curie temperature (Tc). Figure 1 illustrates the temperature [...]
Coercivity and Remanence in Permanent Magnets A good permanent magnet should produce a high magnetic field with a low mass, and should be stable against the influences which would demagnetize it. The desirable properties of such magnets are typically stated in terms of the remanence and coercivity of the magnet materials. coercivity-and-remanence-in-permanent-magnets When [...]
