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Reversible and irreversible switching processes in pure and lanthanum modified lead zirconate thin films

Bharadwaja, SSN and Laha, A and Halder, S and Krupanidhi, SB (2002) Reversible and irreversible switching processes in pure and lanthanum modified lead zirconate thin films. In: Materials Science and Engineering B, 94 (2-3). 218-222 .

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Official URL: http://dx.doi.org/10.1016/S0921-5107(02)00091-0

Abstract

The mechanism of field induced phase switching in antiferroelectric lead zirconate and La-modified lead zirconate thin films has been analysed in terms of reversible and irreversible switching process under weak fields as a function of donor concentration. Extension of Rayleigh law of ferromagnetic materials to the present antiferroelectric and modified antiferroelectric compositions have clearly showed that origin of small signal dielectric permittivity is due to reversible domain wall motion. Rayleigh's constant, a measure of irreversible switching process, exhibited a slight increase with lower La3+ concentrations and followed by a gradual fall for higher concentration. This clearly illustrates that donor addition to antiferroelectric thin films controls the domain switching even under weak fields. (C) 2002 Elsevier Science B.V. All rights reserved.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Elsevier Science.
Keywords: Reversible and irreversible switching;Lead zirconate thin film
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Date Deposited: 28 Jul 2011 08:07
Last Modified: 28 Jul 2011 08:07
URI: http://eprints.iisc.ernet.in/id/eprint/39382

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