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EFFECTS OF A DONOR CONCENTRATION ON THE STRUCTURE OF Nb-DOPED NANO-SIZED BaTiO3, POWDERS PREPARED BY MICROWAVE-HYDROTHERMAL SYNTHESIS METHODS

BaTi|_xNbv03 compounds (with .r = 0.00, 0.01, 0.03, 0.06, and 0.09) are synthesized by the mi-crowave-hydrothermal (MH) method. The donor concentration effect on the structural properties is investigated. The new MH method is used instead of the previous solid state reaction for the ВаТЮз+МЬзОз system. In the MH process, as the niobium incorporation rate increases, the particle growth substantially slows down. The synthesis of Nb-doped BaTiCh is investigated under the MH conditions subjected to 150 °C for only 2 h using C|6H3604Ti (tetra-n-butyl or-thotitanate), Ba(OH)2*8H203 and NbCl5 as Ba, Ti, and Nb sources respectively. For the phase evolution studies, X-ray diffraction patterns are analyzed and Raman spectroscopy is performed. The transmission electron microscope and the field emission scanning electron microscope images are taken for the detailed analysis of the grain size, surface, and morphology of the compound.

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The donor concentration effect on the structural properties is investigated. <...> The new MH method is used instead of the previous solid state reaction for the ВаТЮз+МЬзОз system. <...> In the MH process, as the niobium incorporation rate increases, the particle growth substantially slows down. <...> The synthesis of Nb-doped BaTiCh is investigated under the MH conditions subjected to 150 C for only 2 h using C6H3604Ti (tetra-n-butyl or-thotitanate), Ba(OH)2*8H203 and NbCl5 as Ba, Ti, and Nb sources respectively. <...> For the phase evolution studies, X-ray diffraction patterns are analyzed and Raman spectroscopy is performed. <...> The transmission electron microscope and the field emission scanning electron microscope images are taken for the detailed analysis of the grain size, surface, and morphology of the compound.! <...> The donor concentration effect on the structural properties is investigated. <...> The new MH method is used instead of the previous solid state reaction for the ВаТЮз+МЬзОз system. <...> In the MH process, as the niobium incorporation rate increases, the particle growth substantially slows down. <...> The synthesis of Nb-doped BaTiCh is investigated under the MH conditions subjected to 150 C for only 2 h using C6H3604Ti (tetra-n-butyl or-thotitanate), Ba(OH)2*8H203 and NbCl5 as Ba, Ti, and Nb sources respectively. <...> For the phase evolution studies, X-ray diffraction patterns are analyzed and Raman spectroscopy is performed. <...> The transmission electron microscope and the field emission scanning electron microscope images are taken for the detailed analysis of the grain size, surface, and morphology of the compound.! <...>
** - вычисляется автоматически, возможны погрешности

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