The strength ofNd-Fe-B based permanent magnets is derived from anintermetallic phase Ndlel4B discovered by two ditferent research groups in 1984. In principle, there are two major processingroutes for the production of magnets of this phase respectively Powder Metallurgy and Rapid Soliditication. The magneticproperty derived from both is in principle comparable. However, the characteristic of the two processes is entirely ditTerent.Both processing techniques are widely employed by magnet industries. In this paper, the two techniques are briefly reviewed andextended descriptions will be given on the relationship between microstructure development of the magnets and their magneticproperty. The paper is also to discuss some other development of further improvement on production of magnets in order toimprove the properties. Some research results made by researcher of the magnetic group at University ofIndonesia on hibride rareearth magnets are also highlighted.Key Word: Permanent magnets, powder metallurgy, rapid solidification, microstrukture, magnetic property. Azwar Manaf; e-mail: azwar@maiI1.makara.cso.ui.ac.id
