Structural and electrical properties of 0.98(KO0.5Na0.5ONbOO3)-0.02(BiO0.5NaO0.5TiOO3) ceramics

Authors

• Swayam Aryam Behera
• Sugato Hajra
• Swati Panda
• Ali Amanat
• P. G. R. Achary

Publication Date

2023

Abstract

In the present communication, lead-free ceramics having composition 0.98(K0.5Na0.5NbO3)-0.02(Bi0.5Na0.5TiO3) were synthesized by a high-temperature solid-state reaction route. The Rietveld refinement for the 0.98KNN-0.02BNT reveals an MPB with phase fraction Amm2 (87.76 %) and Pm-3m (12.27%). The SEM study predicted a mean diameter of 0.98KNN-0.02BNT grains as 0.52µm±0.19. The 0.98KNN-0.02BNTceramic displayed a typical hysteresis loop with a remnant polarisation(Pr) of 7.0 μC/cm2, saturation polarization (Ps) of 16 μC/cm2, and a coercive field (Ec) of 26 kV/mm. The electrical, Raman spectra, dielectric, and hysteresis loop study supported a morphotropic phase boundary. The synthesized KNN-BNT lead-free material can be an excellent material for designing new devices like ultrasonic transducers and piezo-actuators.

DOI

10.55713/jmmm.v33i4.1894

First Page

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Last Page

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Recommended Citation

Aryam Behera, Swayam; Hajra, Sugato; Panda, Swati; Amanat, Ali; and Achary, P. G. R. (2023) "Structural and electrical properties of 0.98(KO0.5Na0.5ONbOO3)-0.02(BiO0.5NaO0.5TiOO3) ceramics," Journal of Metals, Materials and Minerals: Vol. 33: No. 4, Article 16.
DOI: 10.55713/jmmm.v33i4.1894
Available at: https://digital.car.chula.ac.th/jmmm/vol33/iss4/16