QUASI-PERIODIC METALLIC MULTILAYERS

Quasiperiodic (Fibonacci sequence) Nb/Cu, Cu/Ti and Ta/Al metallic mul tilayers were fabricated by magnetron sputtering. The microstructures of these multilayers were investigated by means of X-ray and electron diffractions, TEM, Auger spectroscopy and light scattering. The self-s imilarity of the reciprocal lattice is approximately satisfied. The po ssible applications of the high-Z/low-Z quasiperiodic metallic multila yers as the optical elements at near normal incidence angle in the cas e of high photon energy in the soft X-ray region are discussed. Both t heoretical and experimental studies on a new class of quasiperiodic st ructure are reported.