IR Active Phonons of a LiNiPO4 Ionic Crystal
| Autor: | M. S. Radionov, S. A. Klimin, V. A. Yakovlev, A. V. Peschanskii, N. N. Novikova |
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| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science Phonon business.industry Infrared Infrared spectroscopy Astrophysics::Cosmology and Extragalactic Astrophysics Crystal structure Laser 01 natural sciences Molecular physics Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention 010309 optics Condensed Matter::Materials Science law Condensed Matter::Superconductivity 0103 physical sciences Hardening (metallurgy) Condensed Matter::Strongly Correlated Electrons Photonics business Single crystal Astrophysics::Galaxy Astrophysics |
| Zdroj: | Optics and Spectroscopy. 129:42-46 |
| ISSN: | 1562-6911 0030-400X |
| Popis: | The results of an experimental study of the phonon spectrum of a LiNiPO4 single crystal by infrared (IR) reflection spectroscopy are presented. Spectroscopic parameters of phonons active in IR spectra are obtained. The observed number of phonons is generally in agreement with the performed group-theoretical analysis. The reasons for small discrepancies are discussed. With decreasing temperature, a hardening of phonon frequencies is observed, which is associated with temperature changes in the parameters of the crystal lattice. |
| Databáze: | OpenAIRE |
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