Study of three-component ferroelectric perovskite superlattices

Asis, Sarkar and Krupanidhi, SB (2007) Study of three-component ferroelectric perovskite superlattices. In: Solid State Communications, 143 (11-12). pp. 510-514.

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Abstract

We fabricated the three-component ferroelectric superlattices consisting of alternating layers of $SrTiO_3, BaTiO_3$ and $CaTiO_3$ (SBC) with variable interlayer thickness on $Pt(111)/TiO_2/SiO_2/Si(100)$ substrates by pulsed laser deposition. The fabrication of superlattice structures was confirmed by the presence of satellite reflections in x-ray diffraction analysis and a periodic concentration of Sr, Ba and Ca throughout the film in depth profile of secondary ion mass spectrometry analysis. The surface morphology evolutions of the films with different thickness of each layer by varying laser pulse shots were investigated by Scanning Electron Microscopy and Atomic Force Microscopy. The $P_r$ (remnant polarization) and $P_s$ (saturation polarization) of SBC superlattice with 10 nm individual layer thickness were found to be around $4.5 \mu C/ cm^2$ and $27 \mu C/ cm^2$ respectively.

Item Type:	Journal Article
Publication:	Solid State Communications
Publisher:	Elsevier
Additional Information:	Copyright of this article belongs to Elsevier.
Keywords:	A. Ferroelectrics;A. Superlattice;B. Pulsed laser deposition;
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	05 Nov 2007
Last Modified:	19 Sep 2010 04:41
URI:	http://eprints.iisc.ac.in/id/eprint/12400

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