http://hdl.handle.net/20.500.12128/7961
Title: | Crystal structure of the high temperature phase of strontium barium niobate |
Authors: | Paszkowski, Robert Zubko, Maciej Wokulska, Krystyna Dec, Jan |
Keywords: | thermal stresses; thermal strain |
Issue Date: | 2016 |
Citation: | Acta Physica Polonica. A, Vol. 130, nr 4 (2016), s. 856-858 |
Abstract: | Pure and undoped strontium-barium niobate Sr0:40Ba0:60Nb2O6 (SBN40) single crystals grown by the Czochralski method were investigated by single crystal X-ray diffraction methods. The study below TC (429 K for SBN40) confirmed the structure with P4bm space group. Above this temperature the structure transforms into the paraelectric, centrosymmetric one with P4=mbm space group. Analysis of the recorded diffraction patterns allowed to observe several signs of crystal structure modulation. On the registered diffraction images satellite reflections were found. A modulation vector q = ( ; ; ), where = 0:3075(6) (at room temperature) was found and it was similar to that occurring in the SBN61. In addition, above the phase transition temperature on the (hk) planes with l integer a weak diffuse scattering was observed. |
URI: | http://hdl.handle.net/20.500.12128/7961 |
DOI: | 10.12693/APhysPolA.130.856 |
ISSN: | 0587-4246 |
Appears in Collections: | Artykuły (WNŚiT) |
File | Description | Size | Format | |
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Paszkowski_Crystal_structure_of_the_high.pdf | 1,05 MB | Adobe PDF | View/Open |
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