Summary data on ferroelectric PbTiO3 structure |
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| Authors: | M. Kupriyanov D. Kovtun A. Zakharov G. Kushlyan S. Yagunov R. Kolesova |
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| Affiliation: | Department of Physics , Rostov State University , 5 Zorge Street, 344104, Rostov-on-Don, Russia |
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| Abstract: | The original data and the data available in literature on PbTiO3 structure are considered and discussed. From the results of an X-ray diffraction study carried out at room temperature it is concluded that the displacive model is more relevant than the order-disorder one. At the same time it is stressed that the Debye-Waller factors of the atoms are very unusual in the region of the phase transition: B(Pb) > B(O) > B(Ti). This may be evidence of order—disorder phenomena taking place in this temperature region. |
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| Keywords: | PbTiO3 Phase transition Real crystals |
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