Effect of calcination kinetics and microwave sintering parameters on dielectric and peizo-electric properties of (K0.5Na0.5) NBO3 ceramics

Nandini, RN and Krishna, M and Suresh, AV and Narasimha Rao, K (2018) Effect of calcination kinetics and microwave sintering parameters on dielectric and peizo-electric properties of (K0.5Na0.5) NBO3 ceramics. In: Iranian Journal of Materials Science and Engineering, 15 (2). pp. 14-31.

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Abstract

An efficient solid-state approach was established to synthesize (K0.5Na0.5) NbO3 ceramics using calcination kinetics and microwave assisted sintering. Milling of carbonate and oxide raw materials were carried out for 15h to obtain homogeneous nano particles. The crystallite size of 5.30 nm was obtained for the KNN system after calcination through optimized parameters and observed to be stoichiometric in nature. The obtained nano particles showed phase transition from orthorhombic to tetragonal crystal structure without any secondary phases. The high relative density and tetragonality ratio of KNN ceramics obtained through optimized sintering parameters yielded with significant piezoelectric and ferroelectric properties.

Item Type:	Journal Article
Publication:	Iranian Journal of Materials Science and Engineering
Publisher:	Iran University of Science and Technology
Additional Information:	The copyright for this article belongs to the Iran University of Science and Technology.
Keywords:	Calcination kinetics; KNN; Microwave processing; Piezo-electric properties; Solid state method
Department/Centre:	Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited:	11 Aug 2022 09:21
Last Modified:	11 Aug 2022 09:21
URI:	https://eprints.iisc.ac.in/id/eprint/75526

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