Topotatic-like phase transformation of amorphous lead titanate to cubic lead titanate
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
20/05/2014
20/05/2014
01/09/2002
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Resumo |
The crystallization process of lead titanate (PT) prepared using the polymeric precursor method was investigated using X-ray diffractometry, Raman spectroscopy, electron microscopy, and X-ray absorption spectroscopy techniques. The results showed that amorphous PT was formed by an O-Ti-O structure composed of fivefold and sixfold oxygen-coordinated titanium. The local structure of the amorphous PT phase was similar to that of the cubic PT phase, i.e., similar coordination number and similar bond lengths, leading to a topotactic-like transformation during the phase transformation from amorphous to cubic perovskite PT. Because of the low crystallization temperature, every transformation observed during the crystallization process was associated with a short-range rearrangement process. |
Formato |
2166-2170 |
Identificador |
http://dx.doi.org/10.1111/j.1151-2916.2002.tb00429.x Journal of the American Ceramic Society. Westerville: Amer Ceramic Soc, v. 85, n. 9, p. 2166-2170, 2002. 0002-7820 http://hdl.handle.net/11449/32597 10.1111/j.1151-2916.2002.tb00429.x WOS:000177957700005 |
Idioma(s) |
eng |
Publicador |
Amer Ceramic Soc |
Relação |
Journal of the American Ceramic Society |
Direitos |
closedAccess |
Tipo |
info:eu-repo/semantics/article |