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

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9 Scopus citations


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
Issue number5
StatePublished - May 2012

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


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