en گروه سرامیک Ceramic Materials and Engineering Research Paper Research Paper <div style="text-align: justify;">An efficient solid-state approach was established to synthesize (K_0.5Na_0.5) NbO₃ceramics 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.<br> &nbsp;</div> KNN, Solid state method, Calcination kinetics, Microwave processing, Piezo-electric properties. 14 31 http://ijmse.iust.ac.ir/browse.php?a_code=A-10-1458-1&slc_lang=en&sid=1 M. Krishna krishnam@rvce.edu.in 1800319475328460010301 1800319475328460010301 Yes Rashtreeya Vidyalaya College of Engineering R. Nandini nandini.nadar@gmail.com 1800319475328460010302 1800319475328460010302 No Rashtreeya Vidyalaya College of Engineering A.V. Suresh sureshavsgud@yahoo.co.in 1800319475328460010303 1800319475328460010303 No B M S Institute of Technology K. Narasimha Rao nraokolli@yahoo.com 1800319475328460010304 1800319475328460010304 No Indian Institute of Science