Impedance studies on high energy Li3+ irradiated PZT thin films

Angadi, Basavaraj and Jali, VM and Kumar, Ravi and Krupanidhi, SB (2010) Impedance studies on high energy Li3+ irradiated PZT thin films. In: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 268 (5). pp. 476-480.

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Abstract

The ferroelectric Pb(Zr0.48Ti0.52)O-3 (PZT) thin films prepared by the pulsed laser deposition technique were studied for their response to high energy lithium ion irradiation through impedance spectroscopy. The Debye peaks, observed in the impedance and modulus plots of irradiatedfilms, shifts towards higher frequencies compared to those of unirradiated films. This is equivalent to the trend observed with increase in temperature in the unirradiated films due to the dielectric relaxation. The irradiated films showed a decrease in the grain resistance compared to the unirradiated films. The activation energy of dielectric relaxation increases from 1.25 eV of unirradiated film to 1.62 eV of irradiated film. The observed modifications in the irradiated film were ascribed to the modifications in the grain structure due to the high value of electronic energy loss.

Item Type:	Journal Article
Publication:	Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Keywords:	Ferroelectric thin films; PZT; Ion irradiation; Impedance spectroscopy
Department/Centre:	Division of Chemical Sciences > Materials Research Centre
Date Deposited:	10 Jun 2010 04:37
Last Modified:	19 Sep 2010 05:59
URI:	http://eprints.iisc.ac.in/id/eprint/27114

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