Accession Number : ADA194956

Title :   Piezoelectric and Electrostrictive Materials for Transducer Applications. Volume 2.

Descriptive Note : Annual rept. 1 Jan-31 Dec 87,

Corporate Author : PENNSYLVANIA STATE UNIV UNIVERSITY PARK MATERIALS RESEARCH LAB

Personal Author(s) : Cross, L E ; Newnham, R E ; Barsch, G R ; Biggers, J V

PDF Url : ADA194956

Report Date : Mar 1988

Pagination or Media Count : 196

Abstract : A modified Michelson interferometer is used to study the strain properties of piezoelectric and electrostrictive materials. For small displacement, a feedback loop is introduced to stabilize the system against the low frequency optical path-length drifting and the system is capable of resolving displacements of the order of .001 A. For the strain induced by domain switching a dual-channel signal detection scheme is used which automatically reads out the displacement of the sample. The effect on the measurement of the sample bonding to a substrate and other related problems are discussed.

Descriptors :   *ELECTROSTRICTION, *PIEZOELECTRIC MATERIALS, DETECTION, DISPLACEMENT, DUAL CHANNEL, FEEDBACK, LOOPS, MATERIALS, MICHELSON INTERFEROMETERS, SIGNALS, SUBSTRATES, SWITCHING, TRANSDUCERS

Subject Categories : Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE