TY - JOUR
T1 - Sol-gel processing and structure development of lead titanate particles
AU - Wright, John S.
AU - Francis, Lorraine Falter
PY - 1994/1/1
Y1 - 1994/1/1
N2 - Spherical particles of lead titanate, PbTiO3, (PT) were prepared from partially hydrolyzed alkoxide solutions modified with benzoic acid. Modified and aged alkoxide solutions were added dropwise to isopropyl alcohol, forming particles (0.2 to 1.0 μm in diameter). FTIR spectroscopy results demonstrate chelation of the PT alkoxide which prevented the formation of an extended gel network. Diffuse reflectance FTIR (DRIFT) spectra indicate the benzoate ligands are present until 450 °C; TGA results show significant weight loss at 450 °C. PT particles crystallize into the perovskite phase at ≈450 °C, as determined by DTA and XRD. The relatively low crystallization temperature may be due to the effect of benzoate ligands on amorphous structure and presence of internal surfaces.
AB - Spherical particles of lead titanate, PbTiO3, (PT) were prepared from partially hydrolyzed alkoxide solutions modified with benzoic acid. Modified and aged alkoxide solutions were added dropwise to isopropyl alcohol, forming particles (0.2 to 1.0 μm in diameter). FTIR spectroscopy results demonstrate chelation of the PT alkoxide which prevented the formation of an extended gel network. Diffuse reflectance FTIR (DRIFT) spectra indicate the benzoate ligands are present until 450 °C; TGA results show significant weight loss at 450 °C. PT particles crystallize into the perovskite phase at ≈450 °C, as determined by DTA and XRD. The relatively low crystallization temperature may be due to the effect of benzoate ligands on amorphous structure and presence of internal surfaces.
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U2 - 10.1557/proc-346-797
DO - 10.1557/proc-346-797
M3 - Conference article
AN - SCOPUS:0028603187
SN - 0272-9172
VL - 346
SP - 797
EP - 802
JO - Materials Research Society Symposium - Proceedings
JF - Materials Research Society Symposium - Proceedings
T2 - Proceedings of the 1994 MRS Spring Meeting
Y2 - 5 April 1994 through 8 April 1994
ER -