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2002•Journal of Functional BiomaterialsOpen access

Preparation and characterization of (Sr,Pb)TiO_3 powders made in sol-gel process

Zhao Li

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Abstract

Nanocrystalline powders of (Sr,Pb)TiO 3 was successfully made by sol gel process . After the gelation mechanism was investigated by FTIR technique, thermal analysis of dry gel was studied. The powders calcinated at different temperature were analyzed by XRD, which showed that nanocrystalline powders of (Sr,Pb)TiO 3 can be prepared at 600℃. The major crystal structure of powders calcined at 600℃ was cubic perovskite phase, and the average grain size was about 21nm. Moreover, the crystal structure of (Sr,Pb)TiO 3 powders can change with increasing temperature.

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What this paper is about

Nanocrystalline powders of (Sr,Pb)TiO 3 was successfully made by sol gel process . After the gelation mechanism was investigated by FTIR technique, thermal analysis of dry gel was studied. The powders calcinated at different temperature were analyzed by XRD, which showed that nanocrystalline powders of (Sr,Pb)TiO 3 can be prepared at 600℃. The major crystal structure of powders calcined at 600℃ was cubic perovskite phase, and the average grain size was about 21nm. Moreover, the crystal structure of (Sr,Pb)TiO 3 powders can change with increasing temperature.

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Available abstract

Nanocrystalline powders of (Sr,Pb)TiO 3 was successfully made by sol gel process . After the gelation mechanism was investigated by FTIR technique, thermal analysis of dry gel was studied. The powders calcinated at different temperature were analyzed by XRD, which showed that nanocrystalline powders of (Sr,Pb)TiO 3 can be prepared at 600℃. The major crystal structure of powders calcined at 600℃ was cubic perovskite phase, and the average grain size was about 21nm. Moreover, the crystal structure of (Sr,Pb)TiO 3 powders can change with increasing temperature.

Key concepts: Materials science, Nanocrystalline material, Calcination, Sol-gel, Grain size, Chemical engineering, Characterization (materials science), Crystal structure

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