Structural properties of barium stannate
| Autor: | H. Zheng, Y. Gim, Y. Rong, Yu-Sheng Chen, Matthew Krogstad, Alejandro Lopez-Bezanilla, Mikhail Feygenson, Fei Han, Junjie Zhang, Wenge Yang, D. Parshall, S. L. Cooper, D. Phelan |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Diffraction Electron mobility Materials science Phonon 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Molecular physics Electronic Optical and Magnetic Materials Inorganic Chemistry Condensed Matter::Materials Science symbols.namesake Phase (matter) 0103 physical sciences Dispersion (optics) Materials Chemistry Ceramics and Composites symbols Neutron Physical and Theoretical Chemistry 0210 nano-technology Single crystal Raman scattering |
| Zdroj: | Journal of Solid State Chemistry. 262:142-148 |
| ISSN: | 0022-4596 |
| Popis: | BaSnO3 has attracted attention as a transparent conducting oxide with high room temperature carrier mobility. We report a series of measurements that were carried out to assess the structure of BaSnO3 over a variety of length scales. Measurements included single crystal neutron and x-ray diffraction, Rietveld and pair distribution analysis of neutron powder diffraction, Raman scattering, and high-pressure x-ray diffraction. Results from the various diffraction probes indicate that both the long-range and local structures are consistent with the cubic symmetry. The diffraction data under pressure was consistent with a robustly cubic phase up to 48.9 GPa, which is supported by density functional calculations. Additionally, transverse phonon velocities were determined from measured dispersion of the transverse acoustic phonon branches, the results of which are in good agreement with previous theoretical estimates and ultrasound measurements. |
| Databáze: | OpenAIRE |
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