Conclusion
Materials with specific and future hard magnetic properties

Today, hopes for future developments, through improved properties or the development of new materials, rest mainly on three lines of research aimed at [14] :

• improving the properties of Nd-Fe-B magnets;

• mastering the process of obtaining coercive powders with a view to manufacturing anisotropic bonded magnets offering an excellent quality/price ratio and capable of competing advantageously with ferrite magnets;

• the development of new families of magnets, in particular HIREM-type magnets, with very high remanence.

It should also be noted that, with the rise of microtechnologies, magnets measuring a few hundred, or even a few tens of micrometers, will be required. Thin-film...