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Constrained ferroelectricity in BaTiO3/BaZrO3 superlattices

Choudhury, Palash Roy and Krupanidhi, SB (2008) Constrained ferroelectricity in BaTiO3/BaZrO3 superlattices. In: Applied Physics Letters, 92 (10). 102903 -102903.

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BaTiO3/BaZrO3 superlattices with varying periodicities were grown on SrRuO3 buffered MgO (001) substrates by pulsed laser ablation. Ferroelectric measurements were done and correlated to the strain in the heterostructures. The results of ferroelectric measurements indicate an apparent suppression of polarization in the low period superlattices and the onset of weakly ferroelectric behavior in higher period superlattices. Measured switchable polarization values indicate that contribution is primarily from the BaTiO3 in the structure. These results have been correlated to the interfacial strain and the critical thickness of BaTiO3 when grown over tensile substrates such as MgO.

Item Type: Journal Article
Publication: Applied Physics Letters
Publisher: American Institute of Physics
Additional Information: Copyright of this article belongs to American Institute of Physics.
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Date Deposited: 27 Feb 2012 11:14
Last Modified: 27 Feb 2012 11:14
URI: http://eprints.iisc.ac.in/id/eprint/43015

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