Breaking of inversion symmetry in NdGaO3
| العنوان: | Breaking of inversion symmetry in NdGaO3 |
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| المؤلفون: | Vivek Dwij, Vasant Sathe, Himal Bhatt, Mayanak K. Gupta, V. R. Reddy, Ranjan Mittal, Binoy Krishna De |
| المصدر: | Physical Review B. 103 |
| بيانات النشر: | American Physical Society (APS), 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Phase transition, Materials science, Point reflection, Oxide, Infrared spectroscopy, 02 engineering and technology, Substrate (electronics), 021001 nanoscience & nanotechnology, 01 natural sciences, Orientation (vector space), chemistry.chemical_compound, Crystallography, symbols.namesake, chemistry, 0103 physical sciences, symbols, Thin film, 010306 general physics, 0210 nano-technology, Raman spectroscopy |
| الوصف: | $\mathrm{NdGa}{\mathrm{O}}_{3}$ (NGO) is an important substrate material often used in depositing functional oxide thin films. We have carried out temperature-dependent polarized Raman and infrared spectroscopy studies along with theoretical calculations on single-crystal NGO, which revealed a structural phase transition from centrosymmetric space group Pbnm to noncentrosymmetric space group $Pbn{2}_{1}$ at \ensuremath{\sim}200 K. The microscopic origin of the phase transition is extracted using a unique protocol involving polarized Raman spectroscopy (PRS) studies carried out as a function of crystallographic orientation. Here, we demonstrate the power of PRS in probing directional atomic rearrangements across the phase transition. |
| تدمد: | 2469-9969 2469-9950 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::5e8e48f5d735920ef2920a1661e71fc9 https://doi.org/10.1103/physrevb.103.054106 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........5e8e48f5d735920ef2920a1661e71fc9 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 24699969 24699950 |
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