Title

Effect of doping ions on structure and electrical properties of lead-free KNN ceramics

RIS ID

96320

Publication Details

Yin, N., Jalalian, A., Gai, Z., Zhao, L. & Wang, X. (2014). Effect of doping ions on structure and electrical properties of lead-free KNN ceramics. Advanced Materials Research, 1058 190-195.

Abstract

Doping effect on the lattice parameters, vibration modes, dielectric and piezoelectric properties of LiSbO3, LiTaO3 and LiNbO3 substituted lead-free K0.5Na0.5NbO3 (KNN) ceramics are investigated. All compositions are crystallized in morphotropic phase boundary region. Enhanced piezoelectric and electromechanical response d33 = approx.176-197 pC/N, kp = approx. 45%-48%, and kt = approx. 34%-47% obtained in the doped ceramics are due to the presence of the polymorphic phase transition between orthorhombic and tetragonal phase at room temperature.

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