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Synthesis and Characterization of NaNbO3 Mesostructure by a Microwave-Assisted Hydrothermal Method

  • Guilhermina F. Teixeira (a1), Maria Ap. Zaghete (a1), José A. Varela (a1) and Elson Longo (a1)

Abstract

In the present work, we report the synthesis and characterization of NaNbO3 particles obtained by microwave-assisted hydrothermal method from Nb2O5 and NaOH. The synthesis was made at different periods at 180 °C and 300W. The crystallization of NaNbO3 structures produced Na2Nb2O6.H2O in the intermediate phase with fiber-like morphology, and this is associated with the synthesis time. Pure orthorhombic NaNbO3 with cube-like morphology originates after synthesizing for 240 minutes. To verify the remnant polarization of particles, films were obtained by electrophoresis process and sintered at 800°C for 10 minutes in a microwave furnace. The films characterization indicated that films of niobate with fiber-like morphology present remaining polarization, and the morphology of cubes did not show remaining polarization. Considering these results, it can be concluded that the morphology implemented ferroelectric property of NaNbO3.

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Keywords

Synthesis and Characterization of NaNbO3 Mesostructure by a Microwave-Assisted Hydrothermal Method

  • Guilhermina F. Teixeira (a1), Maria Ap. Zaghete (a1), José A. Varela (a1) and Elson Longo (a1)

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