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...promising class of materials, namely, the ferroelectric oxides, researchers from the Max Planck Institute of Microstructure Physics have now identified a new origin of the size effect: Tiny linear defects, with an extension of less than about a tenth of nanometer, are able to deform a tube of material with rectangular cross section of about 4 by 8 nanometer around them.
This deformation is so severe that the useful ferroelectric properties of the material are destroyed within the tube. This new finding shows...
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