A relaxor ferroelectric single crystal cut resulting in large d 312 and zero d 311 for a shear mode accelerometer and related applications

S. Goljahi, J. Gallagher, Shujun Zhang, J. Luo, R. Sahul, W. Hackenberger, C. S. Lynch

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Relaxor ferroelectric single crystals exhibit anisotropic piezoelectric behavior. This enables the use of a combination of crystal cut and poling to obtain piezoelectric properties optimized for certain applications. This work describes a crystal cut that is optimized for applications where a strong face shear mode d 312 coupling is desired with a zero d 311 or zero d 322 piezoelectric coefficient. Such a crystal cut enables the production of stack actuators in a long bar shape with the electric field perpendicular to the bar length. These bars can be cantilevered with a mass at the end to produce a highly sensitive shear mode accelerometer. The zero value of d 311 or d 322 eliminates a possible extensional mode coupling along the length of the bar. Only one of d 311 or d 322 can be made equal to zero, the other having a negative value.

Original languageEnglish (US)
Article number055005
JournalSmart Materials and Structures
Volume21
Issue number5
DOIs
StatePublished - May 1 2012

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accelerometers
Accelerometers
Ferroelectric materials
Single crystals
shear
single crystals
Crystals
crystals
coupled modes
Actuators
actuators
Electric fields
electric fields
coefficients

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Civil and Structural Engineering
  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Electrical and Electronic Engineering

Cite this

Goljahi, S. ; Gallagher, J. ; Zhang, Shujun ; Luo, J. ; Sahul, R. ; Hackenberger, W. ; Lynch, C. S. / A relaxor ferroelectric single crystal cut resulting in large d 312 and zero d 311 for a shear mode accelerometer and related applications. In: Smart Materials and Structures. 2012 ; Vol. 21, No. 5.
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A relaxor ferroelectric single crystal cut resulting in large d 312 and zero d 311 for a shear mode accelerometer and related applications. / Goljahi, S.; Gallagher, J.; Zhang, Shujun; Luo, J.; Sahul, R.; Hackenberger, W.; Lynch, C. S.

In: Smart Materials and Structures, Vol. 21, No. 5, 055005, 01.05.2012.

Research output: Contribution to journalArticle

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AU - Goljahi, S.

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