NDLI: Low temperature evolution of crystalline BaTiO3 from alkali-metal free precursor using sol-gel process

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Low temperature evolution of crystalline BaTiO3 from alkali-metal free precursor using sol-gel process

Content Provider	Scilit
Author	Khalil, K. M. S.
Copyright Year	1999
Description	Journal: Materials Research Innovations Bulk structure and surface texture of BaTiO3 materials synthesized at low temperature using sol-gel technique have been investigated. The materials were produced by the pyrolysis of an xerogel precursor of the tentative formula BaTiO3-x(CH3COO)2x, which was prepared using 1:1 molar ratio of barium acetate and titanium oxyacetate solution. The present method avoids using alkali-metal hydroxides (as a hydrolyzing agent), and thus produces an alkali-metal free precursor. The decomposition course of the xerogel at the onset of formation of crystalline BaTiO3 was probed applying thermogravimetry (TG), differential scanning calorimetery (DSC), Fourier-transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD) techniques. Results indicated that most of the precursor weight loss occurs below 400°C, with the formation of titania rich intermediates. However, it was not until the temperature reached ≥600°C that well crystallized BaTiO3 was produced. The specific surface area and porosity were assessed for BaTiO3 produced at 600–1000°C using N2 adsorption at liquid N2 temperature.
Related Links	http://link.springer.com/content/pdf/10.1007/s100190050095.pdf
Ending Page	262
Page Count	7
Starting Page	256
ISSN	14328917
e-ISSN	1433075X
DOI	10.1007/s100190050095
Journal	Materials Research Innovations
Issue Number	5
Volume Number	2
Language	English
Publisher	Informa UK Limited
Publisher Date	1999-04-01
Access Restriction	Open
Subject Keyword	Journal: Materials Research Innovations Differential
Content Type	Text
Subject	Mechanics of Materials Condensed Matter Physics Materials Science Mechanical Engineering

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