| Autor: |
Ge, Wenwei, Li, Jiefang, Viehland, Dwight D., Chang, Y. F., Messing, G. L. |
| Přispěvatelé: |
Materials Science and Engineering (MSE), Virginia Tech |
| Jazyk: |
angličtina |
| Rok vydání: |
2011 |
| Předmět: |
|
| DOI: |
10.1103/PhysRevB.83.224110 |
| Popis: |
The structure, ferroelectric and piezoelectric properties of < 001 > textured (K0.5Na0.5)(0.98)Li0.02NbO3 ceramics were investigated as a function of temperature and dc bias E. X-ray diffraction revealed an orthorhombic (O) -> tetragonal (T) polymorphic phase boundary (PPB). Phase coexistence was found near the PPB over a 30 degrees C temperature range, where the relative phase volume fractions changed with temperature. Furthermore, increasing E applied along the < 001 > texture direction resulted in a notable increase in the volume fraction of the T phase at the expense of the O phase, effectively shifting the O -> T boundary to lower temperature. An enhancement in the piezoelectric properties was found to accompany this increase in the T volume fraction. National Science Foundation (Materials World Network) DMR-0806592 Department of Energy DE-FG02-07ER46480 |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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