THE PROPERTIES OF AL,SI-DOPED MNBI FILMS

After suitable doping of Al,Si into MnBi, the doped film possesses hexagonal crystal structure with NiAs type and perpendicular anisotropy. Its maximum intrinsic Kerr rotation θK approaches 2.04°. The observation of TEM shows that the crystalline size of this film is about 0.04 μm on a average. Meantime, it has good thermal stability. As a result, it is a promising material for the magneto-optical disc use. Moreover, the reason for the huge enhancement of the Kerr effect is discussed in this paper. © 1990.