TY - JOUR
T1 - Phase structure, morphology, and Raman characteristics of NaNbO3 particles synthesized by different methods
AU - Chang, Yunfei
AU - Yang, Zupei
AU - Dong, Mingyuan
AU - Liu, Zonghuai
AU - Wang, Zenglin
N1 - Funding Information:
This work was supported by National Science Foundation of China (NSFC) (Grant No. 20771070), Natural Science Research Program of Shaanxi Province (Grant No. 2005B16) and Doctorate Foundation of Shaanxi Normal University.
PY - 2009/3/5
Y1 - 2009/3/5
N2 - NaNbO3 (NN) particles were synthesized by using conventional mixed-oxide (CMO), molten salt synthesis (MSS) and topochemical micro-crystal conversion methods (TMC), respectively. The effects of preparation methods on the phase structure, morphology and Raman characteristics of the NaNbO3 particles were investigated. The results show that the NN particles prepared by conventional mixed-oxide and molten salt synthesis methods are all of orthorhombic structure in Pbma space group. Furthermore, those particles have equiaxial morphology. The single-crystal NaNbO3 particles synthesized by the topochemical micro-crystal conversion method are of pseudocubic structure. Moreover, they are of plate-like shape with a high aspect ratio and a high (h 0 0) degree of orientation, which is very promising as template for texturing (K, Na)NbO3 (KNN) based ceramics. Besides, all the spectra lines in the Raman spectra can be attributed to the internal modes of NbO6 octahedron, and they prove that the particles synthesized by the different methods have different structure types.
AB - NaNbO3 (NN) particles were synthesized by using conventional mixed-oxide (CMO), molten salt synthesis (MSS) and topochemical micro-crystal conversion methods (TMC), respectively. The effects of preparation methods on the phase structure, morphology and Raman characteristics of the NaNbO3 particles were investigated. The results show that the NN particles prepared by conventional mixed-oxide and molten salt synthesis methods are all of orthorhombic structure in Pbma space group. Furthermore, those particles have equiaxial morphology. The single-crystal NaNbO3 particles synthesized by the topochemical micro-crystal conversion method are of pseudocubic structure. Moreover, they are of plate-like shape with a high aspect ratio and a high (h 0 0) degree of orientation, which is very promising as template for texturing (K, Na)NbO3 (KNN) based ceramics. Besides, all the spectra lines in the Raman spectra can be attributed to the internal modes of NbO6 octahedron, and they prove that the particles synthesized by the different methods have different structure types.
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U2 - 10.1016/j.materresbull.2008.07.014
DO - 10.1016/j.materresbull.2008.07.014
M3 - Article
AN - SCOPUS:58849134147
SN - 0025-5408
VL - 44
SP - 538
EP - 542
JO - Materials Research Bulletin
JF - Materials Research Bulletin
IS - 3
ER -