Effect of Nb⁵⁺ substitution on the piezoelectric properties of PLZT ceramics

K. V. Ramana Murty Solid State Physics Laboratories, Department of Physics, Andhra University, Visakhapatnam, 530 003, India

S. Narayana Murty Solid State Physics Laboratories, Department of Physics, Andhra University, Visakhapatnam, 530 003, India

K. Umakantham Solid State Physics Laboratories, Department of Physics, Andhra University, Visakhapatnam, 530 003, India

A. Bhanumathi Solid State Physics Laboratories, Department of Physics, Andhra University, Visakhapatnam, 530 003, India

K. Linga Murty North Carolina State University, U.S.A.

Abstract

The effect of Nb⁵⁺ substitution on the dielectric and piezoelectric properties of PLZT (5/65/35) ceramics are investigated for different Nb concentrations. Optimum piezoelectric properties are obtained for 0.5 mole% Nb substitution. The room temperature dielectric constant increases with Nb concentration whereas Curie temperature T_c and peak dielectric constant ϵ_Tc decreases with increase of Nb concentration. As the Nb concentration increases from 0.5 mole% to 1.5 mole% both K_p and K_t decrease.

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Effect of Nb⁵⁺ substitution on the piezoelectric properties of PLZT ceramics

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Effect of Nb⁵⁺ substitution on the piezoelectric properties of PLZT ceramics