Abstract
Raman spectroscopy was applied to the sol-gel-derived Pb(Mg1/3Nb2/3)O3(PMN) powder and thin film. Pyrochlore-type compound which forms on the synthesis of PMN contains Mg in the formula (Pb1.86Mg0.24Nb1.76O6.5) instead of Pb1.5Nb2O6.5, Pb2Nb2O7, or Pb2.8Nb2O7.8, which have been reported in the literature to form on the synthesis of PMN. It is rather difficult to distinguish these pyrochlore-type compounds by X-ray diffraction since thed-values of these compounds are very close to each other. From the result of Raman spectroscopy, it was also clarified that the pyrochlore-type compound formed by the decomposition of PMN thin film also contains Mg in the formula (Pb1.86Mg0.24Nb1.76O6.5).
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