Effect of niobate B-site precursors on phase formation and particle size of lead nickel niobate powders

• Main Authors: Khamman O., Yimnirun R., Ananta S.
• Format: Article
• Language: English
• Published: 2014
• Online Access: http://www.scopus.com/inward/record.url?eid=2-s2.0-50249124880&partnerID=40&md5=1fdc70f8117b723af2c1d0594885d277; http://cmuir.cmu.ac.th/handle/6653943832/5471
• Institution: Chiang Mai University

A perovskite phase of Pb(Ni1/3Nb2/3)O3 or PNN powders has been synthesized by a rapid vibro-milling technique. Both NiNb2O6 and Ni4Nb2O9 have been employed as nickel niobate precursors, with the formation of the PNN phase investigated as a function of calcination conditions by DTA and XRD techniques. Morphology and phase composition have been determined via a combination of SEM and EDX techniques. The nickel niobate precursor and calcination condition have been found to have a pronounced effect on the phase and morphology evolution of the calcined PNN powders. It is seen that optimization of calcination conditions can lead to a single-phase PNN in both methods. However, the formation temperature for single-phase PNN powders was lower for the synthetic method employing a NiNb2O6 precursor. © 2007 Elsevier B.V. All rights reserved.