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Applied Physics A

, Volume 94, Issue 3, pp 477–484 | Cite as

X-ray diffraction analysis of the surface acoustic wave propagation in langatate crystal

  • D. V. RoshchupkinEmail author
  • A. I. Erko
  • L. Ortega
  • D. V. Irzhak
Article

Abstract

X-ray diffraction on a langatate crystal (La3Ga5.5Ta0.5O14, LGT) modulated by a Λ=12 μm Rayleigh surface acoustic wave (SAW) was studied in a double axis X-ray diffractometer scheme at the BESSY synchrotron radiation source. SAW propagation in the crystal causes sinusoidal modulation of the crystal lattice and the appearance of diffraction satellites on the rocking curves, with their number, angular positions, and intensities depending on the wavelength and amplitude of acoustic vibrations of the crystal lattice. Strong absorption of X-ray radiation in LGT enables the observation of the diffraction spectra extinction at certain SAW amplitudes. X-ray diffraction spectra analysis makes it possible to determine SAW amplitudes and wavelengths, to measure the power flow angles, and investigate the diffraction divergence in acoustic beam in LGT.

PACS

61.05.cp 77.65.Dq 

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Copyright information

© Springer-Verlag 2008

Authors and Affiliations

  • D. V. Roshchupkin
    • 1
    Email author
  • A. I. Erko
    • 2
  • L. Ortega
    • 3
  • D. V. Irzhak
    • 1
  1. 1.Institute of Microelectronics Technology RASChernogolovkaRussia
  2. 2.BESSY GmbHBerlinGermany
  3. 3.Institut Néel CNRSGrenoble cedex 09France

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