| Autor: |
Qadri, Syed B., Bellotti, Jeffrey A., Garzarella, Anthony, Wu, Dong Ho |
| Předmět: |
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| Zdroj: |
Applied Physics Letters; 6/20/2005, Vol. 86 Issue 25, p251914, 3p, 5 Graphs |
| Abstrakt: |
Strontium barium niobate is a tungsten-bronze ferroelectric crystal having a tetragonal unit cell. Low-temperature x-ray diffraction studies were performed on a single crystal of Sr0.75Ba0.25Nb2O6 to determine the thermal expansivity along the a- and c-axes. Negative thermal expansion was observed along the c direction while a positive thermal expansion was measured along the a axis. The anisotropic thermal expansion behavior is explained as arising due to the geometry of the crystal structure. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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