METHOD FOR PRODUCING A FERROELECTRIC LAYER

摘要

The invention relates to a method for producing a ferroelectric layer. According to the invention, the application of an outer electrical field facilitates the crystallisation of the material in accordance with a predetermined direction. In this way, it is possible to produce ferroelectric layers whose domains are preferably aligned in such a way that their polarisation vectors are positioned perpendicularly to the electrodes of the storage capacitor in a storage cell. As a result, the overall polarisation vector for the domains runs essentially parallel to the field of the storage capacitor while the storage device is in operation and the polarisation produced has a correspondingly high level of remanence. The level of the signal that can be read out of the storage capacitors is also correspondingly high.