Piezoelectric Materials with Positive Elastic Constant Temperature Coefficients.

Abstract

In order to search for new temperature compensated materials for surface acoustic wave (SAW)devices with low ultrasonic attenuation ahd high electromechanical coupling, the following theoretical and experimental investigations were carried out: Lattice dynamics of alpha-quartz; Heuristic molecular engineering approach--temperature coefficients of elastic constants, electromechanical coupling factor, ultrasonic attenuation, list of new potentially temperature compensated materials; Crystal growth; Elastic and thermoelastic property measurements--lead germanate, nepheline, berlinite, eulytite, and NaAlSiO4.

Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1975
Accession Number
ADA012096

Entities

People

  • G. R. Barsch
  • Robert E. Newnham

Organizations

  • Pennsylvania State University

Tags

DTIC Thesaurus Topics

  • Acoustic Waves
  • Attenuation
  • Coefficients
  • Couplings
  • Crystal Growth
  • Crystal Lattices
  • Crystals
  • Dynamics
  • Lattice Dynamics
  • Materials
  • Piezoelectric Crystals
  • Piezoelectric Materials
  • Surface Acoustic Wave Devices
  • Surface Acoustic Waves
  • Tectosilicates
  • Temperature Coefficients

Readers

  • Materials Science and Engineering.

Technology Areas

  • Microelectronics
  • Microelectronics - Microelectromechanical Systems