Acoustic surface waves on metallized and unmetallized Bi 12GeO20

E. A. Kraut, B. R. Tittmann, L. J. Graham, T. C. Lim

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


New values for the elastic and piezoelectric constants of Bi 12GeO20 and for their temperature derivatives are reported. With these new constants, the predicted value of Δv/v for acoustic surface waves is significantly increased. This prediction has been verified by measurements of the acoustic surface-wave velocity on the metallized and unmetallized (001) surface of Bi12GeO20 and by comparing the observed values with theory. On the (001) plane, the maximum Δv/v occurs in the 〈110〉 direction. The predicted Δv/v is 66×10-4 and the experimentally observed value is (77±15)×10-4.

Original languageEnglish (US)
Pages (from-to)271-272
Number of pages2
JournalApplied Physics Letters
Issue number7
StatePublished - 1970

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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