Activation of single domains in (111) PZT and (100) SBT

作者：Zybill CE^*; Vogel M; Karrai K; Kriele A; Lorenz H

来源：Integrated Ferroelectrics, 2001, 32(1-4): 843-850.

• single domain switching
• PZT
• SBT
• AFM
• TMAFM
• thin films
• ferroelectrics

(111) Lead Zirconate Titanate PZT films (fully poled) of the composition PbTi0.75Zr0.25O3 have been investigated by Tapping Mode Atomic Force Microscopy (TMAFM). As expected, the PZT crystallites were partitioned into slabs of 90 degrees domains with domain walls oriented along < 110 > planes. The polarization c-axis of the domains was inclined by similar to 35 degrees towards the surface and tilted alternately by +45 degrees or -45 degrees to the surface normal. Mechanical activation of the surface with plasma-sharpened supertips with a force of similar to 5 nN allowed to monitor reversible mechanical switching of single domains involving 180 degrees polarization reversal of entire domain slabs. The observed elastic changes in surface topography amounted to similar to1 nm. Similarly, single domains in rhombohedral a-side oriented SrBi2Ta2O9 (SBT) crystallites were switched mechanically which was observed by a change in surface corrugation of similar to 10 nm.

• 出版日期2001