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Phys. Rev. Lett. 89, 115506 (2002) [3 pages]

Observation of Acoustical Memory in LiNbO3

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Michael S. McPherson, Igor Ostrovskii*, and M. A. Breazeale
Department of Physics and Astronomy, University of Mississippi, National Center for Physical Acoustics, Coliseum Drive, University, Mississippi 38677

Received 8 April 2002; published 26 August 2002

See accompanying Physics Focus

A new physical effect is reported. In single crystals of lithium niobate (LiNbO3), we have observed an acoustical memory effect. An acoustical tone burst is stored inside the crystal and reemitted at a later time. This memory signal is related to the acousto-electrical properties of the ferroelectric medium. Futhermore, it is shown to be sensitive to both temperature and frequency.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.89.115506
DOI:
10.1103/PhysRevLett.89.115506
PACS:
62.65.+k, 77.84.Dy

*On leave from the Shevchenko University in Kiev, Ukraine.

 
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