Synthesis of (Sb2Te3)x(TiTe2)y Superlattices

Sb 2 Te 3 ) x (TiTe 2 ) y superlattices with varying values of x and fixed y were prepared using modulated elemental reactants. A procedure to calibrate the ratio of the elements and the absolute amount deposited is discussed. The structure of a reactant designed to form a (Sb 2 Te 3 ) 3 (TiTe 2 ) 3 superlattice is followed as a function of annealing temperature. The annealing conditions obtained from this study enabled us to prepare a series of (Sb 2 Te 3 ) x (TiTe 2 ) y superlattices. The samples were characterized using x-ray reflectivity, x-ray diffraction, and electron probe microanalysis (EPMA)