Structural and electrical properties of 0.98(KO\(_{0.5}\)NaO\(_{0.5}\)NbOO\(_{3}\))-0.02(BiO\(_{0.5}\)NaO\(_{0.5}\)TiOO\(_{3}\)) ceramics
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Published:2023-12-18
Issue:4
Volume:33
Page:1894
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ISSN:2630-0508
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Container-title:Journal of Metals, Materials and Minerals
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language:
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Short-container-title:J Met Mater Miner
Author:
BEHERA Swayam Aryam,HAJRA Sugato,PANDA Swati,AMANAT Ali,ACHARY P. G. R.
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.
Publisher
Metallurgy and Materials Science Research Institute, Chulalongkorn University
Subject
General Materials Science,Materials Science (miscellaneous),Metals and Alloys,Biomaterials,Ceramics and Composites,Polymers and Plastics