Onset of spontaneous electrostrictive strain below 520 K in Pr-doped SrTiO3

Ranjan, Rajeev and Garg, Rohini and Hackl, Rudi and Senyshyn, Anatoliy and Schmidbauer, Elmar and Trots, Dmytro and Boysen, Hans (2008) Onset of spontaneous electrostrictive strain below 520 K in Pr-doped SrTiO3. In: PHYSICAL REVIEW B, 78 (9). pp. 2102-1.

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Abstract

$Sr_{0.95}Pr_{0.05}TiO_{3}$ ceramic is shown to exhibit anomalous value of cubic lattice parameter at room temperature. A combination of temperature dependent dielectric and synchrotron x-ray powder-diffraction study has revealed that the anomalous lattice parameter has contribution from spontaneous electrostrictive strain that sets in below 520 K. In analogy with the lead-based classical relaxor ferroelectrics, it is suggested that Pr-doped $SrTiO_{3}$ is a new class of high-temperature lead-free relaxor ferroelectric system.

Item Type:	Journal Article
Additional Information:	Copyright of this article belongs to The American Physical Society.
Keywords:	1ST-ORDER RAMAN-SCATTERING; DIELECTRIC-RELAXATION; STRONTIUM-TITANATE; PHASE-TRANSITIONS; THIN-FILMS; FERROELECTRICITY; SR1-XCAXTIO3; KTAO3; DIFFRACTION; EVOLUTION
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	03 Feb 2010 11:22
Last Modified:	19 Sep 2010 04:52
URI:	http://eprints.iisc.ernet.in/id/eprint/16484

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