Roundtrips of SAW along multiple routes on a single crystal LiNbO 3 ball

Shingo Akao, Noritaka Nakaso, Tsuneo Ohgi, Kazushi Yamanaka

Research output: Contribution to journalConference articlepeer-review

4 Citations (Scopus)

Abstract

Propagation of SAW was investigated on a single crystal LiNbO3 (lithium niobate) ball. There were ten specific routes, on which roundtrips of SAWs are observed, and one or more specific routes, on which multiple reflections of bulk waves are observed. The temperature coefficient of ten types of SAW was about 80 ppm/°C at 25°C, and it was different from that of the bulk wave, which was 50 ppm/°C. We then investigated the relationship between the observed roundtrips of SAW and the calculated electromechanical coupling constant. In the direction where the roundtrip of SAW occurs, the electromechanical coupling constant is large, but the roundtrip of SAW occurs not in all directions with large electromechanical coupling constant.

Original languageEnglish
Pages (from-to)1557-1560
Number of pages4
JournalProceedings - IEEE Ultrasonics Symposium
Volume2
Publication statusPublished - 2004 Dec 1
Event2004 IEEE Ultrasonics Symposium - Montreal, Que., Canada
Duration: 2004 Aug 232004 Aug 27

Keywords

  • Ball SAW device
  • Lithum niobete
  • Multiple routes
  • Surface acoustic wave

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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