Evidence of the ferroelastic phase transition in Na₂TiGeO₅ ceramics

Adam Sieradzki Institute of Physics, Wrocław University of Technology, Wybrzeże, Wyspiańskiego Street 27, 50-370 Wrocław, PolandCorrespondence[email protected]

Daria Szewczyk Institute of Physics, Wrocław University of Technology, Wybrzeże, Wyspiańskiego Street 27, 50-370 Wrocław, Poland

Marcin Nankiewicz Institute of Physics, Wrocław University of Technology, Wybrzeże, Wyspiańskiego Street 27, 50-370 Wrocław, Poland

Andrzej Jeżowski Institute for Low Temperature and Structure Research, Polish Academy of Sciences, PO Box 1410, 50-950 Wrocław 2, Poland

Ryszard Poprawski Institute of Physics, Wrocław University of Technology, Wybrzeże, Wyspiańskiego Street 27, 50-370 Wrocław, Poland

Agnieszka Ciżman Institute of Physics, Wrocław University of Technology, Wybrzeże, Wyspiańskiego Street 27, 50-370 Wrocław, Poland

Abstract

Newly discovered phase transition at 281 K in Na₂TiGeO₅ ceramics was studied with thermal analysis techniques. The results of thermal conductivity and dilatometric studies unequivocally demonstrated a ferroelastic character of the second-order phase transition.

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Acknowledgments

This study has been financially supported by the Polish Ministry of Scientific Research and Information Technology, Department of Scientific Research (grant no. N507 481388). We thank Paulina Kamyczek for the execution of AFM images in National Laboratory for Quantum Technologies under the POIG 02.02.00-00-003/08-00 project.

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Evidence of the ferroelastic phase transition in Na₂TiGeO₅ ceramics

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Evidence of the ferroelastic phase transition in Na₂TiGeO₅ ceramics