THE ELASTIC CONSTANTS OF STRONTIUM TITANATE

Abstract

The elastic constants c sub 11, c sub 12, and c sub 44 of single crystal strontium titanate have been measured as a function of temperature from 300 to 112 K by determining the velocity of an ultrasonic wave. At 112 K, the strontium titanate undergoes a phase transition to a tetragonal structure which causes a marked change of the elastic properties and the appearance of a domain structure, but does not cause a discontinuity of the dielectric constant. The phase transition is free of hysteresis. The dependence of the elastic properties on a dc electric field parallel to the velocity of sound propagation was measured and found independent of the dielectric properties. The implications of this result are discussed. (Author)

Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1962
Accession Number
AD0284756

Entities

People

  • G. Rupprecht
  • R.o. Bell

Organizations

  • RTX

Tags

DTIC Thesaurus Topics

  • Dielectric Permittivity
  • Dielectric Properties
  • Elastic Properties
  • Electric Fields
  • Phase Transformations
  • Single Crystals
  • Strontium
  • Titanates
  • Transition Temperature
  • Transitions
  • Ultrasounds

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Materials Science and Engineering.