Features of the localization of dopping cations Tb3+ in a LiNbO3 crystal in the concentration range 0,1-2,21 wt.%
LiNbO3:Tb (0,1 wt.%), LiNbO3:Tb (0,48 wt.%), and LiNbO3:Tb (2,21 wt.%) crystals were studied by the infrared absorption spectroscopy in the area of valence vibrations of OH--groups. These crystals were grown by Czochralski method employing direct alloying of blend of the congruent composition. It wa...
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| Format: | Article |
| Language: | Russian |
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Tver State University
2023-12-01
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| Series: | Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов |
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| Online Access: | https://physchemaspects.ru/2023/doi-10-26456-pcascnn-2023-15-055/?lang=en |
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| author | L.A. Bobreva N.V. Sidorov M.N. Palatnikov A.Yu. Pyatyshev |
| author_facet | L.A. Bobreva N.V. Sidorov M.N. Palatnikov A.Yu. Pyatyshev |
| author_sort | L.A. Bobreva |
| collection | DOAJ |
| description | LiNbO3:Tb (0,1 wt.%), LiNbO3:Tb (0,48 wt.%), and LiNbO3:Tb (2,21 wt.%) crystals were studied by the infrared absorption spectroscopy in the area of valence vibrations of OH--groups. These crystals were grown by Czochralski method employing direct alloying of blend of the congruent composition. It was found that when the concentration of point defect centers of the cationic sublattice VLi was higher, than the concentration of impurity point defects TbLi, an absorption band with the frequency of 3487 cm-1 was registered in the IR spectrum. This absorption band is associated with the violation of stoichiometry and the formation of a complex defect (VLi - OН) in the LiNbO3:Tb (0,1 wt.%), and LiNbO3:Tb (0,48 wt.%) crystals. A further increase in the concentration of the alloying impurity leads to a change in the O-O bond length, which affects the OH-bond length and the appearance of a new absorption band with a frequency of 3493 cm-1, which corresponds to the complex defect (TbLi - OН) in the LiNbO3 crystal. Due to non-uniform admixture in the LiNbO3:Tb crystal, clusters are formed to which the absorption bands with frequencies in the range of from 3100-3403 cm-1 to 3510-3580 cm-1 in the spectrum. |
| first_indexed | 2024-03-09T10:50:00Z |
| format | Article |
| id | doaj.art-0678e1a235734135ae45a525c7d87c5e |
| institution | Directory Open Access Journal |
| issn | 2226-4442 2658-4360 |
| language | Russian |
| last_indexed | 2024-03-09T10:50:00Z |
| publishDate | 2023-12-01 |
| publisher | Tver State University |
| record_format | Article |
| series | Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов |
| spelling | doaj.art-0678e1a235734135ae45a525c7d87c5e2023-12-01T07:31:06ZrusTver State UniversityФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов2226-44422658-43602023-12-0115556310.26456/pcascnn/2023.15.055Features of the localization of dopping cations Tb3+ in a LiNbO3 crystal in the concentration range 0,1-2,21 wt.%L.A. Bobreva0N.V. Sidorov1M.N. Palatnikov2A.Yu. Pyatyshev3Tananaev Institute of Chemistry – Subdivision of the Federal Research Centre «Kola Science Centre of the Russian Academy of Sciences», Apatity, RussiaTananaev Institute of Chemistry – Subdivision of the Federal Research Centre «Kola Science Centre of the Russian Academy of Sciences», Apatity, RussiaTananaev Institute of Chemistry – Subdivision of the Federal Research Centre «Kola Science Centre of the Russian Academy of Sciences», Apatity, RussiaР.N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow, RussiaLiNbO3:Tb (0,1 wt.%), LiNbO3:Tb (0,48 wt.%), and LiNbO3:Tb (2,21 wt.%) crystals were studied by the infrared absorption spectroscopy in the area of valence vibrations of OH--groups. These crystals were grown by Czochralski method employing direct alloying of blend of the congruent composition. It was found that when the concentration of point defect centers of the cationic sublattice VLi was higher, than the concentration of impurity point defects TbLi, an absorption band with the frequency of 3487 cm-1 was registered in the IR spectrum. This absorption band is associated with the violation of stoichiometry and the formation of a complex defect (VLi - OН) in the LiNbO3:Tb (0,1 wt.%), and LiNbO3:Tb (0,48 wt.%) crystals. A further increase in the concentration of the alloying impurity leads to a change in the O-O bond length, which affects the OH-bond length and the appearance of a new absorption band with a frequency of 3493 cm-1, which corresponds to the complex defect (TbLi - OН) in the LiNbO3 crystal. Due to non-uniform admixture in the LiNbO3:Tb crystal, clusters are formed to which the absorption bands with frequencies in the range of from 3100-3403 cm-1 to 3510-3580 cm-1 in the spectrum.https://physchemaspects.ru/2023/doi-10-26456-pcascnn-2023-15-055/?lang=ensingle crystallithium niobaterare-earth ionvalence group vibrationscomplex defects |
| spellingShingle | L.A. Bobreva N.V. Sidorov M.N. Palatnikov A.Yu. Pyatyshev Features of the localization of dopping cations Tb3+ in a LiNbO3 crystal in the concentration range 0,1-2,21 wt.% Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов single crystal lithium niobate rare-earth ion valence group vibrations complex defects |
| title | Features of the localization of dopping cations Tb3+ in a LiNbO3 crystal in the concentration range 0,1-2,21 wt.% |
| title_full | Features of the localization of dopping cations Tb3+ in a LiNbO3 crystal in the concentration range 0,1-2,21 wt.% |
| title_fullStr | Features of the localization of dopping cations Tb3+ in a LiNbO3 crystal in the concentration range 0,1-2,21 wt.% |
| title_full_unstemmed | Features of the localization of dopping cations Tb3+ in a LiNbO3 crystal in the concentration range 0,1-2,21 wt.% |
| title_short | Features of the localization of dopping cations Tb3+ in a LiNbO3 crystal in the concentration range 0,1-2,21 wt.% |
| title_sort | features of the localization of dopping cations tb3 in a linbo3 crystal in the concentration range 0 1 2 21 wt |
| topic | single crystal lithium niobate rare-earth ion valence group vibrations complex defects |
| url | https://physchemaspects.ru/2023/doi-10-26456-pcascnn-2023-15-055/?lang=en |
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