PERPENDICULAR MAGNETIC-ANISOTROPY AND MAGNETOOPTICAL KERR ROTATION INFEPT(001) MONOATOMIC MULTILAYERS

[Fe(1 ML)/Pt(1 ML)] (001) monoatomic multilayers, equivalent to the L1 (0) ordered phase, have been prepared by depositing alternate monoatom ic layers of Fe and Pt. The surface flatness and the degree of layer o rdering improve with increasing substrate temperature. The perpendicul ar magnetic anisotropy and Kerr rotation (lambda=633 nm) at room tempe rature increase with increasing degree of layer ordering. The highly o rdered Fe/Pt monoatomic multilayers grown at 500 degrees C show a very large perpendicular anisotropy, which is close to the magnetocrystall ine anisotropy of FePt (L1(0)) ordered alloy, and a high saturation Ke rr rotation of 0.69 degrees.