Accession Number : ADP008052

Title :   Elastic Properties of Strained Metallic Superlattices,

Corporate Author : NEUCHATEL UNIV (SWITZERLAND) INST DE PHYSIQUE

Personal Author(s) : Ariosa, D.

Report Date : 05 MAR 1992

Pagination or Media Count : 4

Abstract : Due to the improvement of metal deposition techniques in the last ten years, high quality epitaxial metallic superlattices made from non soluble materials with different crystal structures and important lattice mismatches are now available for varied applications. One exciting aspect of this kind of superlattices, among others, is their novel elastic properties (different from those of the constituents or their eventual alloys) due to the lattice deformation caused by epitaxial stress. As an example, one can cite the average lattice expansion in the growth direction and the softening of the sound velocity that have been reported for Mo/Ni superlattices. The above papers have been chosen because, as we will see later, they illustrate some controversial interpretation of X-Ray diffraction data and sound velocity measurements.

Descriptors :   *ELASTIC PROPERTIES, *METALS, *SUPERLATTICES, ALLOYS, ARTIFICIAL SATELLITES, CRYSTALS, DEFORMATION, DEPOSITION, DIFFRACTION, EXPANSION, FUNCTIONS, INTENSITY, INTERFACES, LAYERS, MATERIALS, MEASUREMENT, MODELS, MODULATION, QUALITY, SOFTENING, SOUND, STRUCTURES, UNIFORMS, VELOCITY, X RAY DIFFRACTION, X RAYS, STRAIN(MECHANICS), EPITAXIAL GROWTH, CRYSTAL STRUCTURE, LATTICE DYNAMICS, MOLYBDENUM, NICKEL, MECHANICS.

Subject Categories : Properties of Metals and Alloys
      Physical Chemistry
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE