Local electric-field-driven repoling reflected in the ferroelectric polarization of Ce-doped Sr[sub 0.61]Ba[sub 0.39]Nb[sub 2]O[sub 6]

Granzow, T.; Do¨rfler, U.; Woike, Th.; Wo¨hlecke, M.; Pankrath, R.; Imlau, M.; Kleemann, W.
January 2002
Applied Physics Letters;1/21/2002, Vol. 80 Issue 3, p470
Academic Journal
We present pyroelectric measurements with the relaxor-ferroelectric strontium barium niobate in the phase transition regime. It is demonstrated that domains poled at high temperatures are more stable than those oriented at room temperature. This yields a higher phase-transition temperature when heating the sample and a strong repoling during the cooling process. We explain this difference within the framework of the random field model for relaxor ferroelectrics. © 2002 American Institute of Physics.


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