SYNTHESIS AND CHARACTERIZATION OF LEADFREE PIEZOELECTRIC (K0.5Na0.5) NbO3 PRODUCED WITH IMPROVED CALCINATION TEMPERATURE

Nor Amalina, Ahmad and Dzetty Soraya, Abdul Aziz. and Norni Hidayawati, Mat Daud and Rahim, Noor and Amir Azam, Khan (2020) SYNTHESIS AND CHARACTERIZATION OF LEADFREE PIEZOELECTRIC (K0.5Na0.5) NbO3 PRODUCED WITH IMPROVED CALCINATION TEMPERATURE. Jurnal Teknologi, 82 (2). pp. 139-147. ISSN 2180–3722

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Abstract

Potassium sodium niobate (KNN) is one of the lead free piezoelectric material that catch the attention of researchers and also those in the industrial field because of its stable piezoelectric responses and environmental friendly composition. The recent development of KNN shows that many methods have been used to synthesize the KNN but the stoichiometric Ka0.5Na0.5NbO3 composition is extremely difficult to consolidate. One of the ways to overcome the problem is to precisely pre-calcine and use milling process for proper homogenization followed by natural sintering process. In this paper, attempt has been made to synthesize the KNN produced at 750 oC calcination temperature. The results of 1060oC sintering temperature for 2 hours show a good composition of KNN with orthorhombic crystal structure where the final sintered pellet can reach to a relative density up to 87.13 %.

Item Type: Article
Uncontrolled Keywords: Lead-free piezoelectric, KNN, perovskites, sintering, microstructure, unimas, university, universiti, Borneo, Malaysia, Sarawak, Kuching, Samarahan, ipta, education, research, Universiti Malaysia Sarawak
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
Divisions: Academic Faculties, Institutes and Centres > Centre for Pre-University Studies
Depositing User: Karen Kornalius
Date Deposited: 02 Apr 2020 06:02
Last Modified: 05 Apr 2021 05:24
URI: http://ir.unimas.my/id/eprint/29367

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