Mechanical Properties of Interfaces and Superlattices

Abstract

This proposal was dedicated to the study of mechanical properties of interfaces and superlattices. These properties were correlated with growth techniques and extensive structural characterization. The principal goal of this proposal was to ascertain whether structural or electronic effects control the mechanical properties of interfaces and superlattices. Molecular Beam Epitaxy (MBE) and Sputtering was used to prepare single interfaces and multilayers. In- situ structural characterization was accomplished mainly using High Energy Electron Diffraction (HEED). Post preparation Micro-cleavage Transmission Electron Microscopy (MTEM), together with temperature dependent x-ray diffraction was performed to characterize the structure of the sample. The main successes during the last funding period of this proposal includes the simultaneous study of a variety of elastic constants of Cu/Nb, Fe/Cr and W/Ni superlattices together with detailed structural studies, the measurement of the elastic constants of GaAs/AlAs superlattices and the development of a vibrating drum method for measurements of the biaxial modulus of thin films

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1993
Accession Number
ADA268591

Entities

People

  • Ivan K. Schuller

Organizations

  • University of California, San Diego

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms

DTIC Thesaurus Topics

  • Crystal Lattices
  • Crystal Structure
  • Diffraction
  • Elastic Properties
  • Electron Microscopy
  • Films
  • Frequency
  • Magnetic Properties
  • Materials
  • Mechanical Properties
  • Modulus Of Elasticity
  • Phase Transformations
  • Shear Modulus
  • Thin Films
  • Transitions
  • X Rays
  • X-Ray Diffraction

Fields of Study

  • Materials science

Readers

  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.
  • Structural Dynamics.
  • Thin Film Deposition Science.

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene