Sol-gel derived SrxBa1-xNb2O6 (SBN) powders were prepared at an annealing t
emperature of 1200 degrees C. Their structural changes were characterized b
y Raman spectroscopy and X-ray diffractometry. Changes in the peak position
and the relative intensity of the Raman spectra and X-ray patterns were ex
amined for different values of x. Our results suggest that the SBN powders
consist of a mixture of orthorhombic phase BaNb2O6 (BN) and tetragonal tung
sten-bronze phase (TTB) SBN powders for x < 0.5, and orthorhombic phase SrN
b2O6 (SN) and TTB phase SBN powders for x > 0.5. Pure TTB type SBN powders
with x not equal 0.5, however, were obtained at higher annealing temperatur
es. A possible formation route of the sol-gel derived SBN powder is discuss
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