Synthesis and Study of effect of Cr3+ concentration on Physical properties and pyroelectric property of the Pb(Zr0.825Ti0.175)O3 ceramic system

TUAN NGUYEN, DUY ANH (2016) Synthesis and Study of effect of Cr3+ concentration on Physical properties and pyroelectric property of the Pb(Zr0.825Ti0.175)O3 ceramic system. In: Sixth International Conference on Advances in Applied Science and Environmental Engineering - ASEE 2016, 26-27 November 2016, Kuala Lumpur, Malaysia.

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Abstract

In this paper, the effects of Cr3+concentrations on some physical properties and pyroelectric properties of the ceramic system of (1-x)Pb(Zr0.825Ti0.175)O3– xCr2O3, where x = 0; 0.50; 0.75; 1.00; 1.25; 1.50; 2.00% mol have been presented. Experimental results indicated that Cr3+ concentrations are of great effect on the mentioned above physical properties of the ceramics. X-ray diffraction diagrams indicated that exist pure perovskite phases with rhombohedral structure in all of ceramic compositions of the system. From SEM images we can see that rhombohedral grains of 2 m size closely arranged with small pores. Besides, ceramic densities, dielectric constants, dielectric loss factor are presented with respective values of  = 7.48 g/cm3, e/e0 = 343, tan= 0.03 for the optimal Cr2O3 concentration of 1.25% mol. Cr3+ concentrations are of very strong effect on structure, microstructure and electric property of the studied system. The electric conductivity are of very small values  = 2.96.10-18Ω-1 cm. Hysteresis loops are of typical rectangular form characterizing ferroelectric materials with permanent polarization Pr = (11.9 – 30.4) C/cm2 and coercive field Ec = 9.5 – 12.4 kV/cm; Pyroelectric effects are very strong in all compositions of the studied system with maximal pyroelectric coefficients γmax =(0.78 – 7.72 ).10-2 μC.cm-2.K-1, pyroelectric coefficients at room temperature (3060K) γroom = (0.15 – 0.94).10-3 μ C.cm-3.K-1.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: PZT, Zr–rich PZT ferroelectric ceramics,pyroelectric, polarization
Depositing User: Mr. John Steve
Date Deposited: 20 Mar 2019 11:31
Last Modified: 20 Mar 2019 11:31
URI: http://publications.theired.org/id/eprint/684

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