Nanocomposites for Electronic Applications. Volume 3

Abstract

Work on this program and associated studies on the ONR program on 'Piezoelectric and Electrostrictive materials for Transducer Applications' has lead to a significantly improved understanding of the fundamental mechanisms in Relaxor Ferroelectrics. For the perovskite Lead Magnesium Niobate which is the prototype for many other relaxor perovskites, the self limiting nonstoichiometric ordering of Mg/Nb ions is shown to be the symmetry breaking key to the onset of micropolar regions at the Burns temperature well above the dielectric maximum. The simple paraelectric behavior at high temperature is shown to be modified by cooperation on cooling, leading to a Vogel:Fulcher type condensation into a glass like state at low temperature

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jun 14, 1993
Accession Number
ADA267073

Entities

People

  • Leslie Eric Cross

Organizations

  • Pennsylvania State University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Ceramic Materials
  • Chemical Synthesis
  • Chemistry
  • Crystal Structure
  • Dielectric Permittivity
  • Electromagnetic Fields
  • Equations Of State
  • Heat Energy
  • Material Degradation Processes
  • Materials Engineering
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Mechanics
  • Phase Transformations
  • Refractive Index
  • Three Dimensional

Fields of Study

  • Materials science
  • Physics

Readers

  • Materials Science and Engineering.

Technology Areas

  • Microelectronics