ChemInform Abstract: Preparation of Undoped Lead Titanate Ceramics via Sol-Gel Processing.

ChemInform ◽  
2010 ◽  
Vol 30 (19) ◽  
pp. no-no
Author(s):  
Sunuk Kim ◽  
Myong-cheol Jun ◽  
Soon-cheol Hwang
2013 ◽  
Vol 5 ◽  
pp. 04036
Author(s):  
Y. Guaaybess ◽  
M. Maanan ◽  
R. Adhiri ◽  
M. Moussetad ◽  
A. El Mesbahi ◽  
...  

2004 ◽  
Vol 82 (2) ◽  
pp. 289-296 ◽  
Author(s):  
Sunuk Kim ◽  
Myong-cheol Jun ◽  
Soon-cheol Hwang

2007 ◽  
Vol 121-123 ◽  
pp. 149-152
Author(s):  
Liang Sheng Qiang ◽  
Dong Yan Tang ◽  
Xing Hong Zhang ◽  
L. Jin

By adding methyl alcohol/water solution with certain concentration into sol to hydrolysis directly and sintering the fresh sol directly, lead titanate(PbTiO3) ceramics doped with magnesium are prepared by using magnesium acetate as doper to prohibit the disadvantages contained in conventional sol-gel method, such as low hydrolytic rate, high sintering temperature, long preparation period. The changes of structure, microstructure, synthesis process and electric properties of modified ceramics are studied in detail. The sizes and morphology of high purely and high density magnesium doped lead titanate nanocrystals thus obtained are observed by TEM photographs and the structures and affection of sintering temperature of to lattice constant and sizes of nanocrystals are detected by XRD. Electric properties detection results show that doped lead titanate ceramics exhibite excellent dielectric, ferroelectric and pyroelectric properties compare with pure lead titanate.


2021 ◽  
Vol 585 (1) ◽  
pp. 88-96
Author(s):  
Avanish Kumar ◽  
Anju Dixit ◽  
Swati Chopra ◽  
P. S. Dobal

1994 ◽  
Vol 346 ◽  
Author(s):  
John S. Wright ◽  
Lorraine Falter Francis

ABSTRACTSpherical 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.


1994 ◽  
Vol 13 (24) ◽  
pp. 1804-1805 ◽  
Author(s):  
R. Sirera ◽  
M. L. Calzada ◽  
F. Carmona ◽  
B. Jim�nez

1988 ◽  
Vol 71 (5) ◽  
pp. C-280-C-282 ◽  
Author(s):  
Thomas W. Dekleva ◽  
James M. Hayes ◽  
Leslie E. Cross ◽  
Gregory L. Geoffroy
Keyword(s):  
Sol Gel ◽  

1990 ◽  
Vol 180 ◽  
Author(s):  
S.D. Ramamurthi ◽  
D.A. Payne

ABSTRACTLead titanate gels were prepared by sol-gel processing from lead acetate and titanium isopropoxide in methoxyethanol. In the present study, 1H, and 13C FTNMR spectroscopic and mass spectrometric techniques were used to identify the structures of lead and titanium precursors formed by refluxing lead acetate and titanium isopropoxide in methoxyethanol, respectively. Lead acetate was found to be partially alkoxylated, whereas, the titanium precursor was identified as a dimer with complete alkoxy group exchange. Similar procedures were applied to identify the lead titanium complex formed from lead and titanium precursors.


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