| Autor: |
Roy, Manas Kumar, Paul, Jaita, Dattagupta, Sushanta |
| Předmět: |
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| Zdroj: |
Journal of Applied Physics; Oct2010, Vol. 108 Issue 6, p064102, 8p, 1 Diagram, 7 Graphs |
| Abstrakt: |
We employ the Ginzburg-Landau-Devonshire free energy theory to construct a set of time-dependent ordinary differential equations in order to model the interaction dynamics of the tip of an atomic force microscope (AFM) with the surface of a ferroelectric thin film. Using this method we obtain (i) domain profile and (ii) domain nucleation which starts under the AFM tip. Since ferroelectrics are piezoelectric, the electromechanical coupling considered in our equations causes polarization to oscillate with the same frequency with which the AFM tip vibrates. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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