| Autor: |
Adolph L. Micheli, Norman W. Schubring, Joseph V. Mantese, Antonio B. Catalan, Richard J. Lopez |
| Rok vydání: |
1992 |
| Předmět: |
|
| Zdroj: |
Physical Review Letters. 68:1778-1781 |
| ISSN: |
0031-9007 |
| DOI: |
10.1103/physrevlett.68.1778 |
| Popis: |
Unidirectional charge flow was observed in potassium tantalum niobate, ${\mathrm{KTa}}_{0.6}$${\mathrm{Nb}}_{0.4}$${\mathrm{O}}_{3}$, films. These films of relaxor-type diffuse phase transition material were formed by metalorganic deposition and had a polarization gradient normal to the surface of the films. Novel charge pumping was observed in the active operation of simple two-terminal structures by excitation with periodic, strong electric fields. Such operation also showed a large pseudopyroelectric response. Effective pyroelectric coefficients as large as 2\ifmmode\times\else\texttimes\fi{}${10}^{\mathrm{\ensuremath{-}}5}$ C/${\mathrm{cm}}^{2}$ \ifmmode^\circ\else\textdegree\fi{}C have been obtained. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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