Symmetry breaking in single-crystal SrTiO3 plates: EPR manifestations
| Autor: | V. A. Trepakov, S. I. Nikitin, I. N. Gracheva, D. G. Zverev, B. F. Gabbasov, Alexander Rodionov, Alexandr Dejneka, Airat Kiiamov, R. V. Yusupov, Lubomir Jastrabik |
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| Rok vydání: | 2021 |
| Předmět: |
Condensed Matter - Materials Science
Materials science Condensed matter physics Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences General Physics and Astronomy Crystal structure law.invention Condensed Matter::Materials Science Paramagnetism Tetragonal crystal system chemistry.chemical_compound chemistry Impurity law Strontium titanate Symmetry breaking Electron paramagnetic resonance Single crystal |
| Zdroj: | Europhysics Letters. 133:37002 |
| ISSN: | 1286-4854 0295-5075 |
| Popis: | Electron paramagnetic resonance studies of the impurity Fe$^{3+}$ and Mn$^{4+}$ centers indicate that the symmetry of the crystal structure of millimeter-scale strontium titanate plates above 105 K lowers in the bulk from cubic to tetragonal, different from that of the conventional low-temperature antiferrodistortive phase. It is shown that the effect does not originate from the residual stress; its magnitude (observed tetragonal distortion) and particular manifestations depend on plate orientation, surface quality and the geometry of a sample. Peculiarities of the observed phenomenon are presented and possible scenario of its realization is discussed. 14 pages, 4 figures |
| Databáze: | OpenAIRE |
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