A Study of Ferroelectricity in Single Crystal Compounds of the Type AFB5 and A3B2F12

Abstract

Phase relations in the PbF2/AIF3 binary system were studied in order to facilitate the preparation of single crystals of a reportedly high dielectric constant ternary ferroelectric phase. A phase diagram for the composition range 50 to 100 mole percent lead fluoride was developed and crystals of the incongruently melting Pb3A12F12 phase were grown using Bridgman growth techniques. A new inverted Bridgman method was developed to help induce melt convection during growth, thereby reducing the build-up of unwanted species at the growth interface. Lead fluorides, Aluminum fluorides.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1988
Accession Number
ADA203610

Entities

People

  • Robert S. Feigelson

Organizations

  • Stanford University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Crystals
  • Dielectric Permittivity
  • Diffraction
  • Heat Treatment
  • Materials
  • Measurement
  • Metals
  • Phase Diagrams
  • Physical Properties
  • Refraction
  • Refractive Index
  • Single Crystals
  • Solid Solutions
  • Temperature Gradients
  • Transition Temperature
  • X Rays
  • X-Ray Diffraction

Readers

  • Materials Science and Engineering.