MICROSTRUCTURE OF AU/NB MULTILAYERS

[摘要] Au/Nb multilayers are prepared using magnetron sputter deposition. The close-packed orientation of the thin films is revealed using X-ray diffraction. Although in bulk form Au(111) and Nb(110) have a near zero lattice misfit, the average lattice spacing of the multilayer is found to vary as a function of the repeat period in the direction of the composition modulation. Similar lattice distortions of the multilayer structure are known for f.c.c./f.c.c. metallic superlattices, such as Au/Ni. Lattice imaging of the Au/Nb multilayers, in cross-section, provides a direct means to complete an initial characterization of the atomic rearrangements in the modulation direction.

[发布日期] 1990-12-15