what is the magnetic properties of permanent magnetic materials, which indicators are included? The main magnetic properties

of permanent magnetic materials are: remanence (Jr, Br), coercivity (bHc), intrinsic coercivity (jHc), magnetic energy
Product (BH) m. We usually refer to the magnetic properties of permanent magnetic materials, refers to these four. Other

magnetic properties of permanent magnet materials are: Curie temperature (Tc), working temperature (Tw)
(Brθ, jHcθ), recovery permeability (μrec.), Demagnetization curve squareness (Hk / jHc), high-temperature magnetic properties

and magnetic properties of the uniformity of the magnetic and so on.
In addition to magnetic properties, the physical properties of permanent magnetic materials also includes density, conductivity

, thermal conductivity, thermal expansion coefficient; mechanical properties include Vickers hardness, compression (pull) strengt

h,
Impact toughness and so on. In addition, the performance of permanent magnet materials, there is an important indicator is

the surface state and corrosion resistance.