Epitaxial antiferroelectric/ferroelectric multilayers were grown on -electroded substrates by pulsed laser deposition. Polarization-field and switching current-voltage curves show a mixed antiferroelectric-ferroelectric behavior of the multilayers with an individual layer thickness above , whereas below the multilayers show only ferroelectric behavior. Clearly the layers thinner than experienced a transition into the ferroelectric state. X-ray diffraction reciprocal space mapping showed a corresponding orthorhombic-to-rhombohedral transition of the layers. The observations are discussed in terms of the influence of strain.
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© 2007 American Institute of Physics.
2007
American Institute of Physics
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