Shukla, A. K. and Agrawal, V. K. and Das, I. M. L. and Singh, Janardan and Singh, D. P. and Sood, K. N. (2006) Structural, dielectric and electromechanical properties of Cr-doped PLZT close to the morphotropic phase boundary region. Phase Transitions, 79. pp. 875-887. ISSN 0141-1594

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Abstract

Piezoelectric ceramic lead lanthanum zirconate titanate (PLZT), doped with Cr2O3 [Pb(Zr0.57Ti0.43)O-3 + 6 at% La + x mole% Cr2O3, x = 0, 0.05, 0.11, 0.16, 0.22, 0.54 and 1.08], has been prepared by the solid-state reaction method, and characterized by X-ray diffiractometry, scanning electron microscopy, vector impedance spectroscopy (VIS). The VIS studies reveal the donor-like role of Cr for x < 0.16 mole%, and acceptor-like role for higher doping concentrations. Maxima of coupling coefficient K-p, charge constants d(33), d(31), d(h) and dielectric constant epsilon(T)(33) are observed at x = 0.05 mole%, at which concentration Cr behaves as a donor. The average value of Poisson's ratio, a E, is found to be 0.34 +/- 0.01, with a slight decrease in values x > 0.16 mole%.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s Taylor & Francis.
Subjects:	Crystallography Physics
Divisions:	UNSPECIFIED
Depositing User:	Users 27 not found.
Date Deposited:	07 Aug 2018 08:54
Last Modified:	07 Aug 2018 08:54
URI:	http://npl.csircentral.net/id/eprint/2557

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