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Effect of pressure on dielectric and ferroelectric properties of bismuth vanadate

Ramasesha, SK and Singh, AK and Varma, KBR (1997) Effect of pressure on dielectric and ferroelectric properties of bismuth vanadate. In: Materials Chemistry and Physics, 48 (2). pp. 136-139.

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Dielectric constant and dielectric loss studies have been made on polycrystalline (with both random and partial grain orientation) and single-crystal samples of Bi2VO5.5. Both the dielectric constant and the dielectric loss decrease with increasing pressure for all the samples, although the decrease is appreciable in the case of partially grain oriented samples. On application of moderate pressures, unpoled single crystals exhibit ferroelectric hysteresis loops very similar to that of the electrically poled single crystals at room pressure. Similar behaviour has been observed in the case of random and partially grain oriented polycrystalline samples. Beyond about 2 GPa, the samples do not exhibit normal ferroelectric hysteresis loops.

Item Type: Journal Article
Publication: Materials Chemistry and Physics
Publisher: Elsevier Science
Additional Information: Copyright of this article belongs to Elsevier Science.
Keywords: Bismuth vanadate;dielectric constant;ferroelectric property;pressure.
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Date Deposited: 02 Jun 2009 06:47
Last Modified: 19 Sep 2010 05:25
URI: http://eprints.iisc.ac.in/id/eprint/18900

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