The nanocrystalline sodium niobate(NaNbO3) and sodium tantalite(NaTaO3) powders with perovskite structure were
synthesized by the solvthermal method with glycol as solvent. These powders were characterized by powder X-ray
diffraction(XRD), Raman spectroscopy, Scanning electron microscopy (SEM) and transmission electron
microscopy(TEM). Rietveld refinement of X-ray diffraction data and Raman spectroscopy confirm that the nanoparticles
of NaNbO3 and NaTaO3 have orthorhombically distrorted structures with Pmc21 and Pbnm space groups, respectively.
The SEM photograph shows that NaTaO3 and NaTaO3 powder are cubic morphology. The TEM and the SAED pattern
confirmed that the nanoscale NaTaO3 is single-crystal structure. In addition, the influence of the concentration on the
NaTaO3 powder characteristics was also detailed investigated.
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