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A Study of Amorphous Precursors for PbZrO3-PbTiO3 Based Ceramic Materials

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Abstract

Amorphous precursors for PbZrO3 and PbTiO3 ceramics were prepared from lead acetate and the transition metal n -propoxide in n-propanol or n-butoxide in n-butanol and hydrolysed with an excess of water.

According to GLC and TGA/EGA analyses, the type of alkoxide group influences distinctly the structure of heterometallic precursors, i.e., oxo or acetate bridging, and the amounts of hydroxyl and organic groups bound to the metal network.

The local environments of metal atoms in the amorphous precursors were also studied by EXAFS. The analysis reveals that in Pb-Zr precursors alkoxide groups modify the coordination spheres of the zirconium atoms. Conversely, local environments of both lead and titanium atoms within the analysed range of 3.4 A depend weakly on the type of alkoxide used.

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Authors
  1. B. Malič
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  2. I. Arčon
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  3. M. Kosec
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  4. A. Kodre
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Malič, B., Arčon, I., Kosec, M. et al. A Study of Amorphous Precursors for PbZrO3-PbTiO3 Based Ceramic Materials. Journal of Sol-Gel Science and Technology 8, 343–346 (1997). https://doi.org/10.1023/A:1026495220320

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  • DOI: https://doi.org/10.1023/A:1026495220320

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