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Applicant:
Indian Institute of Technology (IIT) Patna 
Author:
P. Kour, S. K. Pradhan, Pawan Kumar, S. K. Sinha, M. Kar 
Corresponding Authors:
P. Kour 
DOI #:
10.1007/s00339-016-0122-8 
Title:
Enhanced ferroelectric and piezoelectric properties in La-modified PZT ceramics 
Journal:
Appl. Phys. A 
Year:
2016 
Volume:
122 
Page:
591 
Keywords:
ferroelectric and piezoelectric properties 
Abstract:
The effect of lanthanum (La) doping on ferro-electric and piezoelectric properties of lead zirconate titanate (PZT) sample has been investigated. Pb1-xLaxZr0.52Ti0.48O3ceramics with x = 0.00, 0.02, 0.04, 0.06 and 0.10 wereprepared by the sol–gel technique. Raman and Fouriertransforms infrared spectroscopy have been employed tounderstand the structural modification due to ionic sizemismatch. Raman spectra show the existence of bothrhombohedral and tetragonal crystal symmetries. It alsoshows the dielectric relaxation with increase in La concen-tration in the sample. The increase in lattice strain due to Ladoping increases the remnant polarization and coercive field.The linear piezoelectric coefficient increases with theincrease in La concentration. It reveals that La-substitutedPZT is a better candidate for piezoelectric sensor applica-tions as compared to that of PZT. 
Entered by:
Venkata Dantham on 2020-08-02 
 
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