B-H Curve for Permanent Magnets What is a B-H curve first of all? B is the nomenclature for magnetic flux density (induction) and H is magnetic field strength; a B-H curve plots out the relationship between them for a particular ferromagnetic material. The changes in magnetic flux density is dependent on the magnetic field strength. [...]
How to Remagnetize Magnets Steel or ceramic magnets that have been stored incorrectly, dropped repeatedly or are simply old may lose their magnetic properties. For optimal results when it comes to rejuvenating these magnets, touch one pole to the opposite pole of a neodymium magnet. Obtain the Materials Obtain a neodymium magnet, which is made [...]
Magnetic Losses Reversible Magnetic losses are normal behavior for all magnetic materials. As the remanence of the all the magnetic materials decreases with increasing temperature, the temperature coefficient is negative, it is to be expected that the magnetic field of a magnet also will decrease with an increase of the temperature. However, this decrease of [...]
Strong Magnet Magnetization Orientation How do you differ from the north pole of a strong magnet without being marked? Obviously, it is impossible to distinguish between eyes alone. The compass can be used to approximate the powerful magnet, and the pointer to the north pole of the earth points to the south pole of the [...]
Measuring Permanent Magnets Properties with Vibrating Sample Magnetometer Vibrating Sample Magnetometers (VSMs) are the most commonly employed tool for properties measurement of permanent magnet materials. They can be applied to magnet powder, thin films, anisotropic materials, magnetic recording materials, single crystals and liquid, etc.. They also allow for a broad temperature range from 4 K [...]
