Effect of Eu3 + doping on curie temperature and fatigue properties of Pb,La(ZrTi)O3 films.

Antony Jeyaseelan, A. and Rangappa, D. and Dutta, S. (2017) Effect of Eu3 + doping on curie temperature and fatigue properties of Pb,La(ZrTi)O3 films. Thin Solid Films, 642. pp. 136-141. ISSN 00406090

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Abstract

Pb0·92(La1 − yEuy)0·08(Zr0·52Ti0·48)0.98O3 (PLEZT) films were prepared with varying Eu3 + concentrations (y = 0.0, 0.3, 0.5 and 0.7) to study the doping effect on crystal structure and ferroelectric properties. The XRD results confirmed the formation of tetragonal perovskite structure in PLEZT with gradual increase in (110) peak intensity. The residual stress value calculated for PLZT film was (+)0.751 GPa which reduces to (+)0.387 GPa with increasing Eu3 + concentration. The influence of Eu3 + doping concentration on ferroelectric switching behaviour was investigated by observing the remanent polarization, spontaneous polarization and displacement current. The remanent polarization (Pr) in PLZT film increased from 8.9 μC/cm2 to 13.3 μC/cm2 with Eu3 + concentration which is expected due to the increase in tetragonality factor and reduction in dipolar defects in PLEZT films. A strong residual stress dependent ferroelectric properties and phase transition temperature was observed in PLZT films with Eu3 + doping. The improved fatigue resistance observed in Eu3 + doped PLZT may be due to the suppression of oxygen ion vacancy.

Item Type: Article
Subjects: CHEMISTRY AND MATERIALS > Composite Materials
Depositing User: Mrs SK Pratibha
Date Deposited: 25 Feb 2020 14:21
Last Modified: 25 Feb 2020 14:21
URI: http://nal-ir.nal.res.in/id/eprint/13289

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