Paper Title:
The Characterization of Two Dimensional Electrostrictive CuInP2S6 Materials for Transducers
  Abstract

The electromechanical properties of layered, two-dimensional materials of CuInP2S6 family have been investigated. It was shown that, at room temperature, which is above phase transition and under DC bias electric field, these materials behave as a piezoelectric because of electrostriction. In this case, the piezoelectric and electromechanical coupling coefficients are odd functions of the bias field and have a linear dependence on the bias field. The relative changes of ultrasonic velocity are found to have a quadratic dependence on the bias DC field. In bias fields of about 20 kV/m, the values of square of electromechanical coupling coefficient could be high enough (>20%) for longitudinal vibrations in thin plates of investigated CuInP2(S,Se)6 materials in the paraelectric phase. In the ferroelectric phase, the external DC electric field acts as polarizing field and electromechanical coupling coefficients sufficiently increase. At the transitions, the piezoelectric anomalies have been observed.

  Info
Periodical
Materials Science Forum (Volumes 514-516)
Edited by
Paula Maria Vilarinho
Pages
230-234
DOI
10.4028/www.scientific.net/MSF.514-516.230
Citation
V. Samulionis, J. Banys, Y. Vysochanskii, "The Characterization of Two Dimensional Electrostrictive CuInP2S6 Materials for Transducers", Materials Science Forum, Vols. 514-516, pp. 230-234, 2006
Online since
May 2006
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Price
$32.00
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