Open AccessSYNTHESIS AND CHARACTERIZATION OF LEAD-FREE PIEZOELECTRIC (K0.5Na0.5)NbO3 PRODUCED WITH IMPROVED CALCINATION TEMPERATURE
Author(s) -
Nik Nazli Nik Ahmad,
Dzetty Soraya Abdul Aziz,
Norni Hidayawati Mat Daud,
Rahim Noor,
Amir Azam Khan
Publication year - 2020
Publication title -
jurnal teknologi/jurnal teknologi
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.191
H-Index - 22
eISSN - 2180-3722
pISSN - 0127-9696
DOI - 10.11113/jt.v82.13992
Subject(s) - calcination , sintering , orthorhombic crystal system , materials science , piezoelectricity , homogenization (climate) , relative density , stoichiometry , chemical engineering , mineralogy , crystal structure , composite material , crystallography , chemistry , organic chemistry , catalysis , biodiversity , ecology , engineering , biology
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 %.