Electromechanical coupling coefficient of semiconducting hexagonal crystal measured by Brillouin scattering

Takahiko Yanagitani, Taisuke Yoshida, Mami Matsukawa

Research output: Contribution to journalConference article

8 Citations (Scopus)

Abstract

Super high frequency (SHF) acoustic measurement realizes the piezoelectric characterization in semiconducting material without the effect of electrical conducting. We have proposed the method for measuring shear and extensional electromechanical coupling coefficient k15 and k33 in a semiconducting crystal simultaneously, using Brillouin scattering method. In ZnO crystal, k15 value measured from measured acoustic velocities was in good accordance with the previously reported constant. We also have found large variety in effective piezoelectricity, implying variety of resistivity in the ZnO crystal.

Original languageEnglish
Article number4803544
Pages (from-to)1487-1490
Number of pages4
JournalProceedings - IEEE Ultrasonics Symposium
DOIs
Publication statusPublished - 2008 Dec 1
Event2008 IEEE International Ultrasonics Symposium, IUS 2008 - Beijing, China
Duration: 2008 Nov 22008 Nov 5

Keywords

  • Brillouin scattering
  • Component
  • Electromechanical coupling coefficient
  • Piezoelectric semiconductor
  • ZnO

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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