| Autor: |
Julien, Eschbach, Brice, Vincent, Didier, Rouxel, Mohamed, El Hakiki, Omar, Elmazria |
| Rok vydání: |
2009 |
| Zdroj: |
IEEE transactions on ultrasonics, ferroelectrics, and frequency control. 56(3) |
| ISSN: |
1525-8955 |
| Popis: |
This study deals with using Brillouin spectroscopy to determine the temperature variation of potassium niobate elastic constants. Two different samples have been used (Y- and Z-cut), and all the measurements were done in the temperature range between 300 K and 420 K. The calculations concern only the first-order coefficients. The acoustic velocity is then determined for each sample in 3 directions of propagation. Results are given for C( 22), C( 55), and C( 66) elastic constants and accuracy problems are discussed. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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