Structure, spectroscopy and dielectric properties of BaTiO3:Eu3+ nanocrystallites prepared by the sol-gel method

作者: D Hreniak , E Łukowiak , K Maruszewski , R Pązik , W Stręk

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摘要: Eu-doped BaTiO3 nanocrystalline powders have been obtained by sol–gel method. Their morphology, structure and dielectric properties investigated as a function of sintering temperature. The sintered at the temperatures below 800 °C demonstrate luminescence behaviour characteristic inversed symmetry Eu sites, where only D0 → F1 transitions are allowed. Above this temperature system undergoes phase transition characterized lack inversion enabling dipole–electric transitions.