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Thermal expansion studies on ferroelectric materials

Rao, MVR and Umarji, A (1997) Thermal expansion studies on ferroelectric materials. In: Bulletin of Materials Science, 20 (7). pp. 1023-1028.

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Thermal expansion data is reported over a wide temperature range (80-800 K) for $BaTiO_3 (BT)$ and $Pb(Fe_{1/2}Nb_{1/2})O_3 (PFN)$, belonging to different classes of ferroelectric materials. The sharp structural phase transitions of BT result in lowering of the thermal expansion coefficient (α) at the transitions which is proportional to the change in polarization at the transitions. In PFN, a relaxor ferroelectric, lowering of α is spread over a wider temperature range across the dielectric maxima

Item Type: Journal Article
Publication: Bulletin of Materials Science
Publisher: Indian Academy of Sciences
Additional Information: Copyright of this article belongs to Indian Academy of Sciences.
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Date Deposited: 17 Jul 2007
Last Modified: 27 Aug 2008 12:41
URI: http://eprints.iisc.ac.in/id/eprint/10159

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