Magnet fabrication methods

We shall now briefly review a number of techniques that have been used in either factory or laboratory to prepare permanent magnets of the various suitable RE-TM compositions. They generally require that one or more alloys be prepared first in a separate step. It is therefore convenient to discuss alloy preparation and magnet fabrication methods separately and sequentially. 

Chuistov K.V., Shpak A.P., Perekos A.E., Rud A.D., Uvarov V.N. (2003) The small metallic particles fabrication methods, atomic and electronic structure, magnetic properties and practical applications, Uspekhi Fiziki Metallov 4, 235-270 (in Russian). 

A further fabrication method, known as mechanical alloying leads to an amorphous material by ballmilling of the elements in a closed container, followed by heat treatment to homogenise and crystallise the compound (Cahn, 1990). Usually, this method results in isotropic magnets. 

The subject is approached by emphasising its interdisciplinary nature. Synthesis and fabrication methods and crystal structures are covered alongside the theoretical basis of magnetic properties. This book fills a gap in the ceramics literature. It has been written to appeal to the international community of materials scientists, including researchers in industry and graduate students. 

Chitosan based magnetic nanoparticles emerged as potential tool for the delivery of varions drugs, biosensor and immobilization applications of various maCTomole-cules. Various fabrication methods have been developed. Various chitosan based polyelectrolyte complexes as drug delivery systems are mentioned in Fig. 3.7. 

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