ABSTRACT
Diluted magnetic semiconductors, namely, semiconductors doped with magnetic impurities, or ternary alloys with transition metal (TM) components (Mn, Fe, Co) are recognized as templates for various devices in semiconductor spintronics. In this chapter we briefly discuss the physics related to the magnetic properties of wideband and narrow-gap III-V DMS bearing in mind the main subject of theoretical and experimental activity—room- temperature ferromagnetism. Material science aspects of ferromagnetism include the growth method, the choice of magnetic component and its content, and intentional manipulation of the electron spectrum of the host matrix by fabricating artificial structures like quantum wells and quantum dots.
