Continuum Modeling of Elastic Dielectric Solids with Defects, with Application to Barium Strontium Titanate Thin Films

Abstract

A model is developed for the electromechanical behaviour of dielectric crystals with defects: dislocations, vacancies, and misoriented boundaries. A geometric framework describes the deformation of the lattice in the presence of such defects. Thermodynamic and kinetic relations are formulated, the latter enabling description of diffusion of charged vacancies and mass rearrangement at free surfaces. Analytical and numerical solutions of specific problems offer insight into performance of barium strontium titanate (BST) films.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2008
Accession Number
ADA487525

Entities

People

  • John D. Clayton
  • M. A. Grinfeld
  • Peter W. Chung
  • William D. Nothwang

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Weapons Technologies

DTIC Thesaurus Topics

  • Barium
  • Barium Strontium Titanates
  • Boundaries
  • Crystal Lattices
  • Diffusion
  • Dislocations
  • Electric Fields
  • Films
  • Geometry
  • Materials
  • Military Research
  • Modulus Of Elasticity
  • Strontium
  • Thin Films
  • Three Dimensional
  • Titanates
  • Voltage

Fields of Study

  • Physics

Readers

  • Computational Fluid Dynamics (CFD)
  • Plasma Physics / Magnetohydrodynamics
  • Thin Film Deposition Science.

Technology Areas

  • Microelectronics