Accession Number:

ADA012096

Title:

Piezoelectric Materials with Positive Elastic Constant Temperature Coefficients.

Descriptive Note:

Final rept. 8 Jan 73-8 Jan 75,

Corporate Author:

PENNSYLVANIA STATE UNIV UNIVERSITY PARK MATERIALS RESEARCH LAB

Personal Author(s):

Report Date:

1975-04-01

Pagination or Media Count:

166.0

Abstract:

In order to search for new temperature compensated materials for surface acoustic wave SAWdevices 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.

Subject Categories:

  • Line, Surface and Bulk Acoustic Wave Devices
  • Acoustooptic and Optoacoustic Devices
  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE