Band-like Inhomogeneity in Bulk ZnGeP<sub>2</sub> Crystals, and Composition and Influence on Optical Properties
The influence of intrinsic impurities on the formation of band-like inhomogeneities in ZGP single crystals containing two highly volatile elements has been analyzed. It has been shown that the formation of growth bands occurs due to the accumulation of binary phosphides at the crystallization front...
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2025-04-01
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| Online Access: | https://www.mdpi.com/2073-4352/15/4/382 |
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| author | Alexey Lysenko Nikolay N. Yudin Margarita Khimich Mikhail Zinovev Elena Slyunko Sergey Podzyvalov Vladimir Kuznetsov Andrey Kalsin Maxim Kulesh Houssain Baalbaki Alexey Olshukov |
| author_facet | Alexey Lysenko Nikolay N. Yudin Margarita Khimich Mikhail Zinovev Elena Slyunko Sergey Podzyvalov Vladimir Kuznetsov Andrey Kalsin Maxim Kulesh Houssain Baalbaki Alexey Olshukov |
| author_sort | Alexey Lysenko |
| collection | DOAJ |
| description | The influence of intrinsic impurities on the formation of band-like inhomogeneities in ZGP single crystals containing two highly volatile elements has been analyzed. It has been shown that the formation of growth bands occurs due to the accumulation of binary phosphides at the crystallization front and is accompanied by the formation of pores in the near-wall region of the ingot. A connection between near-wall pore formation and the presence of growth bands in ZGP has been established. X-ray spectrometry revealed differences in the chemical compositions of “light” and “dark” growth striations, with significant deviations from stoichiometry in these regions. The dark bands exhibited a higher phosphorus content compared to the light bands and showed an increased germanium content in the light bands. Differences in the orientation of crystallographic axes were observed between the light and dark regions. It has been shown that samples containing inclusions of band-like inhomogeneity significantly distort the profile of the radiation passing through and generated in the crystal and lead to pronounced astigmatism. However, in contrast to the extremely negative influence of banded inhomogeneity on the optical properties of single crystals, the influence of growth striations on the radiation resistance of crystals is minimal. |
| format | Article |
| id | doaj-art-e077cdce75884d438dbe88ff34c1817e |
| institution | DOAJ |
| issn | 2073-4352 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj-art-e077cdce75884d438dbe88ff34c1817e2025-08-20T03:13:46ZengMDPI AGCrystals2073-43522025-04-0115438210.3390/cryst15040382Band-like Inhomogeneity in Bulk ZnGeP<sub>2</sub> Crystals, and Composition and Influence on Optical PropertiesAlexey Lysenko0Nikolay N. Yudin1Margarita Khimich2Mikhail Zinovev3Elena Slyunko4Sergey Podzyvalov5Vladimir Kuznetsov6Andrey Kalsin7Maxim Kulesh8Houssain Baalbaki9Alexey Olshukov10Radiophysical Department, National Research Tomsk State University, Tomsk 634050, RussiaRadiophysical Department, National Research Tomsk State University, Tomsk 634050, RussiaRadiophysical Department, National Research Tomsk State University, Tomsk 634050, RussiaRadiophysical Department, National Research Tomsk State University, Tomsk 634050, RussiaRadiophysical Department, National Research Tomsk State University, Tomsk 634050, RussiaRadiophysical Department, National Research Tomsk State University, Tomsk 634050, RussiaRadiophysical Department, National Research Tomsk State University, Tomsk 634050, RussiaRadiophysical Department, National Research Tomsk State University, Tomsk 634050, RussiaRadiophysical Department, National Research Tomsk State University, Tomsk 634050, RussiaRadiophysical Department, National Research Tomsk State University, Tomsk 634050, RussiaRadiophysical Department, National Research Tomsk State University, Tomsk 634050, RussiaThe influence of intrinsic impurities on the formation of band-like inhomogeneities in ZGP single crystals containing two highly volatile elements has been analyzed. It has been shown that the formation of growth bands occurs due to the accumulation of binary phosphides at the crystallization front and is accompanied by the formation of pores in the near-wall region of the ingot. A connection between near-wall pore formation and the presence of growth bands in ZGP has been established. X-ray spectrometry revealed differences in the chemical compositions of “light” and “dark” growth striations, with significant deviations from stoichiometry in these regions. The dark bands exhibited a higher phosphorus content compared to the light bands and showed an increased germanium content in the light bands. Differences in the orientation of crystallographic axes were observed between the light and dark regions. It has been shown that samples containing inclusions of band-like inhomogeneity significantly distort the profile of the radiation passing through and generated in the crystal and lead to pronounced astigmatism. However, in contrast to the extremely negative influence of banded inhomogeneity on the optical properties of single crystals, the influence of growth striations on the radiation resistance of crystals is minimal.https://www.mdpi.com/2073-4352/15/4/382ZGPgrowth striationslaser-induced damage threshold |
| spellingShingle | Alexey Lysenko Nikolay N. Yudin Margarita Khimich Mikhail Zinovev Elena Slyunko Sergey Podzyvalov Vladimir Kuznetsov Andrey Kalsin Maxim Kulesh Houssain Baalbaki Alexey Olshukov Band-like Inhomogeneity in Bulk ZnGeP<sub>2</sub> Crystals, and Composition and Influence on Optical Properties Crystals ZGP growth striations laser-induced damage threshold |
| title | Band-like Inhomogeneity in Bulk ZnGeP<sub>2</sub> Crystals, and Composition and Influence on Optical Properties |
| title_full | Band-like Inhomogeneity in Bulk ZnGeP<sub>2</sub> Crystals, and Composition and Influence on Optical Properties |
| title_fullStr | Band-like Inhomogeneity in Bulk ZnGeP<sub>2</sub> Crystals, and Composition and Influence on Optical Properties |
| title_full_unstemmed | Band-like Inhomogeneity in Bulk ZnGeP<sub>2</sub> Crystals, and Composition and Influence on Optical Properties |
| title_short | Band-like Inhomogeneity in Bulk ZnGeP<sub>2</sub> Crystals, and Composition and Influence on Optical Properties |
| title_sort | band like inhomogeneity in bulk zngep sub 2 sub crystals and composition and influence on optical properties |
| topic | ZGP growth striations laser-induced damage threshold |
| url | https://www.mdpi.com/2073-4352/15/4/382 |
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