Neutron Diffraction Investigation of Langanite Crystals
Abstract The upper and lower parts of a single crystal with a nominal composition $ La_{3} $$ Ga_{5.5} $$ Nb_{0.5} $$ O_{14} $grown by the Czochralski method (Ir crucible, 99%Ar + 1%$ O_{2} $, growth direction) have been studied by neutron diffraction for the first time. The compositions of the uppe...
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| Autor*in: |
Kuz’micheva, G. M. [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2010 |
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| Anmerkung: |
© Pleiades Publishing, Ltd. 2010 |
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| Übergeordnetes Werk: |
Enthalten in: Crystallography reports - SP MAIK Nauka/Interperiodica, 1993, 55(2010), 6 vom: Nov., Seite 1067-1073 |
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| Übergeordnetes Werk: |
volume:55 ; year:2010 ; number:6 ; month:11 ; pages:1067-1073 |
| Links: |
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| DOI / URN: |
10.1134/S1063774510060258 |
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OLC2070256510 |
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| 245 | 1 | 0 | |a Neutron Diffraction Investigation of Langanite Crystals |
| 264 | 1 | |c 2010 | |
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| 520 | |a Abstract The upper and lower parts of a single crystal with a nominal composition $ La_{3} $$ Ga_{5.5} $$ Nb_{0.5} $$ O_{14} $grown by the Czochralski method (Ir crucible, 99%Ar + 1%$ O_{2} $, growth direction) have been studied by neutron diffraction for the first time. The compositions of the upper and lower parts are found to differ (($ La_{2.935(2)} $□0.065)($ Ga_{0.450} $$ Nb_{0.550(3)} $)$ Ga_{3} $($ Ga_{1.965(4)} $ □0.035)($ O_{13.90(1)} $ □0.10) and ($ La_{2.940(1)} $ □0.060)($ Ga_{0.590} $$ Nb_{0.410(2)} $)$ Ga_{5} $($ O_{13.82(1)} $ □0.18), respectively), and microtwin formation was observed in the upper part, with two unit cells related by the translation 1/2Z. Based on a comparison of the refined crystal composition and optical transmission spectra, the absorption bands at 30 000, 24 500, and 20 500 $ cm_{-1} $ were assigned to divacancies (2 VLa''', 3 VO..), oxygen vacancies, and color centers, respectively. A relationship between the crystal color and oxygen content is established. | ||
| 650 | 4 | |a Neutron Diffraction | |
| 650 | 4 | |a Crystallography Report | |
| 650 | 4 | |a Color Center | |
| 650 | 4 | |a Optical Transmission Spectrum | |
| 650 | 4 | |a Czochralski Method | |
| 700 | 1 | |a Kaurova, I. A. |4 aut | |
| 700 | 1 | |a Rybakov, V. B. |4 aut | |
| 700 | 1 | |a Dubovsky, A. B. |4 aut | |
| 700 | 1 | |a Cousson, A. |4 aut | |
| 700 | 1 | |a Zaharko, O. |4 aut | |
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10.1134/S1063774510060258 doi (DE-627)OLC2070256510 (DE-He213)S1063774510060258-p DE-627 ger DE-627 rakwb eng 540 530 VZ Kuz’micheva, G. M. verfasserin aut Neutron Diffraction Investigation of Langanite Crystals 2010 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Pleiades Publishing, Ltd. 2010 Abstract The upper and lower parts of a single crystal with a nominal composition $ La_{3} $$ Ga_{5.5} $$ Nb_{0.5} $$ O_{14} $grown by the Czochralski method (Ir crucible, 99%Ar + 1%$ O_{2} $, growth direction) have been studied by neutron diffraction for the first time. The compositions of the upper and lower parts are found to differ (($ La_{2.935(2)} $□0.065)($ Ga_{0.450} $$ Nb_{0.550(3)} $)$ Ga_{3} $($ Ga_{1.965(4)} $ □0.035)($ O_{13.90(1)} $ □0.10) and ($ La_{2.940(1)} $ □0.060)($ Ga_{0.590} $$ Nb_{0.410(2)} $)$ Ga_{5} $($ O_{13.82(1)} $ □0.18), respectively), and microtwin formation was observed in the upper part, with two unit cells related by the translation 1/2Z. Based on a comparison of the refined crystal composition and optical transmission spectra, the absorption bands at 30 000, 24 500, and 20 500 $ cm_{-1} $ were assigned to divacancies (2 VLa''', 3 VO..), oxygen vacancies, and color centers, respectively. A relationship between the crystal color and oxygen content is established. Neutron Diffraction Crystallography Report Color Center Optical Transmission Spectrum Czochralski Method Kaurova, I. A. aut Rybakov, V. B. aut Dubovsky, A. B. aut Cousson, A. aut Zaharko, O. aut Enthalten in Crystallography reports SP MAIK Nauka/Interperiodica, 1993 55(2010), 6 vom: Nov., Seite 1067-1073 (DE-627)171187822 (DE-600)1162973-3 (DE-576)038500337 1063-7745 nnns volume:55 year:2010 number:6 month:11 pages:1067-1073 https://doi.org/10.1134/S1063774510060258 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY SSG-OLC-CHE SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_21 GBV_ILN_22 GBV_ILN_30 GBV_ILN_40 GBV_ILN_70 AR 55 2010 6 11 1067-1073 |
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10.1134/S1063774510060258 doi (DE-627)OLC2070256510 (DE-He213)S1063774510060258-p DE-627 ger DE-627 rakwb eng 540 530 VZ Kuz’micheva, G. M. verfasserin aut Neutron Diffraction Investigation of Langanite Crystals 2010 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Pleiades Publishing, Ltd. 2010 Abstract The upper and lower parts of a single crystal with a nominal composition $ La_{3} $$ Ga_{5.5} $$ Nb_{0.5} $$ O_{14} $grown by the Czochralski method (Ir crucible, 99%Ar + 1%$ O_{2} $, growth direction) have been studied by neutron diffraction for the first time. The compositions of the upper and lower parts are found to differ (($ La_{2.935(2)} $□0.065)($ Ga_{0.450} $$ Nb_{0.550(3)} $)$ Ga_{3} $($ Ga_{1.965(4)} $ □0.035)($ O_{13.90(1)} $ □0.10) and ($ La_{2.940(1)} $ □0.060)($ Ga_{0.590} $$ Nb_{0.410(2)} $)$ Ga_{5} $($ O_{13.82(1)} $ □0.18), respectively), and microtwin formation was observed in the upper part, with two unit cells related by the translation 1/2Z. Based on a comparison of the refined crystal composition and optical transmission spectra, the absorption bands at 30 000, 24 500, and 20 500 $ cm_{-1} $ were assigned to divacancies (2 VLa''', 3 VO..), oxygen vacancies, and color centers, respectively. A relationship between the crystal color and oxygen content is established. Neutron Diffraction Crystallography Report Color Center Optical Transmission Spectrum Czochralski Method Kaurova, I. A. aut Rybakov, V. B. aut Dubovsky, A. B. aut Cousson, A. aut Zaharko, O. aut Enthalten in Crystallography reports SP MAIK Nauka/Interperiodica, 1993 55(2010), 6 vom: Nov., Seite 1067-1073 (DE-627)171187822 (DE-600)1162973-3 (DE-576)038500337 1063-7745 nnns volume:55 year:2010 number:6 month:11 pages:1067-1073 https://doi.org/10.1134/S1063774510060258 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY SSG-OLC-CHE SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_21 GBV_ILN_22 GBV_ILN_30 GBV_ILN_40 GBV_ILN_70 AR 55 2010 6 11 1067-1073 |
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10.1134/S1063774510060258 doi (DE-627)OLC2070256510 (DE-He213)S1063774510060258-p DE-627 ger DE-627 rakwb eng 540 530 VZ Kuz’micheva, G. M. verfasserin aut Neutron Diffraction Investigation of Langanite Crystals 2010 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Pleiades Publishing, Ltd. 2010 Abstract The upper and lower parts of a single crystal with a nominal composition $ La_{3} $$ Ga_{5.5} $$ Nb_{0.5} $$ O_{14} $grown by the Czochralski method (Ir crucible, 99%Ar + 1%$ O_{2} $, growth direction) have been studied by neutron diffraction for the first time. The compositions of the upper and lower parts are found to differ (($ La_{2.935(2)} $□0.065)($ Ga_{0.450} $$ Nb_{0.550(3)} $)$ Ga_{3} $($ Ga_{1.965(4)} $ □0.035)($ O_{13.90(1)} $ □0.10) and ($ La_{2.940(1)} $ □0.060)($ Ga_{0.590} $$ Nb_{0.410(2)} $)$ Ga_{5} $($ O_{13.82(1)} $ □0.18), respectively), and microtwin formation was observed in the upper part, with two unit cells related by the translation 1/2Z. Based on a comparison of the refined crystal composition and optical transmission spectra, the absorption bands at 30 000, 24 500, and 20 500 $ cm_{-1} $ were assigned to divacancies (2 VLa''', 3 VO..), oxygen vacancies, and color centers, respectively. A relationship between the crystal color and oxygen content is established. Neutron Diffraction Crystallography Report Color Center Optical Transmission Spectrum Czochralski Method Kaurova, I. A. aut Rybakov, V. B. aut Dubovsky, A. B. aut Cousson, A. aut Zaharko, O. aut Enthalten in Crystallography reports SP MAIK Nauka/Interperiodica, 1993 55(2010), 6 vom: Nov., Seite 1067-1073 (DE-627)171187822 (DE-600)1162973-3 (DE-576)038500337 1063-7745 nnns volume:55 year:2010 number:6 month:11 pages:1067-1073 https://doi.org/10.1134/S1063774510060258 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY SSG-OLC-CHE SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_21 GBV_ILN_22 GBV_ILN_30 GBV_ILN_40 GBV_ILN_70 AR 55 2010 6 11 1067-1073 |
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10.1134/S1063774510060258 doi (DE-627)OLC2070256510 (DE-He213)S1063774510060258-p DE-627 ger DE-627 rakwb eng 540 530 VZ Kuz’micheva, G. M. verfasserin aut Neutron Diffraction Investigation of Langanite Crystals 2010 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Pleiades Publishing, Ltd. 2010 Abstract The upper and lower parts of a single crystal with a nominal composition $ La_{3} $$ Ga_{5.5} $$ Nb_{0.5} $$ O_{14} $grown by the Czochralski method (Ir crucible, 99%Ar + 1%$ O_{2} $, growth direction) have been studied by neutron diffraction for the first time. The compositions of the upper and lower parts are found to differ (($ La_{2.935(2)} $□0.065)($ Ga_{0.450} $$ Nb_{0.550(3)} $)$ Ga_{3} $($ Ga_{1.965(4)} $ □0.035)($ O_{13.90(1)} $ □0.10) and ($ La_{2.940(1)} $ □0.060)($ Ga_{0.590} $$ Nb_{0.410(2)} $)$ Ga_{5} $($ O_{13.82(1)} $ □0.18), respectively), and microtwin formation was observed in the upper part, with two unit cells related by the translation 1/2Z. Based on a comparison of the refined crystal composition and optical transmission spectra, the absorption bands at 30 000, 24 500, and 20 500 $ cm_{-1} $ were assigned to divacancies (2 VLa''', 3 VO..), oxygen vacancies, and color centers, respectively. A relationship between the crystal color and oxygen content is established. Neutron Diffraction Crystallography Report Color Center Optical Transmission Spectrum Czochralski Method Kaurova, I. A. aut Rybakov, V. B. aut Dubovsky, A. B. aut Cousson, A. aut Zaharko, O. aut Enthalten in Crystallography reports SP MAIK Nauka/Interperiodica, 1993 55(2010), 6 vom: Nov., Seite 1067-1073 (DE-627)171187822 (DE-600)1162973-3 (DE-576)038500337 1063-7745 nnns volume:55 year:2010 number:6 month:11 pages:1067-1073 https://doi.org/10.1134/S1063774510060258 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY SSG-OLC-CHE SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_21 GBV_ILN_22 GBV_ILN_30 GBV_ILN_40 GBV_ILN_70 AR 55 2010 6 11 1067-1073 |
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10.1134/S1063774510060258 doi (DE-627)OLC2070256510 (DE-He213)S1063774510060258-p DE-627 ger DE-627 rakwb eng 540 530 VZ Kuz’micheva, G. M. verfasserin aut Neutron Diffraction Investigation of Langanite Crystals 2010 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Pleiades Publishing, Ltd. 2010 Abstract The upper and lower parts of a single crystal with a nominal composition $ La_{3} $$ Ga_{5.5} $$ Nb_{0.5} $$ O_{14} $grown by the Czochralski method (Ir crucible, 99%Ar + 1%$ O_{2} $, growth direction) have been studied by neutron diffraction for the first time. The compositions of the upper and lower parts are found to differ (($ La_{2.935(2)} $□0.065)($ Ga_{0.450} $$ Nb_{0.550(3)} $)$ Ga_{3} $($ Ga_{1.965(4)} $ □0.035)($ O_{13.90(1)} $ □0.10) and ($ La_{2.940(1)} $ □0.060)($ Ga_{0.590} $$ Nb_{0.410(2)} $)$ Ga_{5} $($ O_{13.82(1)} $ □0.18), respectively), and microtwin formation was observed in the upper part, with two unit cells related by the translation 1/2Z. Based on a comparison of the refined crystal composition and optical transmission spectra, the absorption bands at 30 000, 24 500, and 20 500 $ cm_{-1} $ were assigned to divacancies (2 VLa''', 3 VO..), oxygen vacancies, and color centers, respectively. A relationship between the crystal color and oxygen content is established. Neutron Diffraction Crystallography Report Color Center Optical Transmission Spectrum Czochralski Method Kaurova, I. A. aut Rybakov, V. B. aut Dubovsky, A. B. aut Cousson, A. aut Zaharko, O. aut Enthalten in Crystallography reports SP MAIK Nauka/Interperiodica, 1993 55(2010), 6 vom: Nov., Seite 1067-1073 (DE-627)171187822 (DE-600)1162973-3 (DE-576)038500337 1063-7745 nnns volume:55 year:2010 number:6 month:11 pages:1067-1073 https://doi.org/10.1134/S1063774510060258 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY SSG-OLC-CHE SSG-OLC-GEO SSG-OPC-GGO GBV_ILN_21 GBV_ILN_22 GBV_ILN_30 GBV_ILN_40 GBV_ILN_70 AR 55 2010 6 11 1067-1073 |
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Kuz’micheva, G. M. @@aut@@ Kaurova, I. A. @@aut@@ Rybakov, V. B. @@aut@@ Dubovsky, A. B. @@aut@@ Cousson, A. @@aut@@ Zaharko, O. @@aut@@ |
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neutron diffraction investigation of langanite crystals |
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Neutron Diffraction Investigation of Langanite Crystals |
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Abstract The upper and lower parts of a single crystal with a nominal composition $ La_{3} $$ Ga_{5.5} $$ Nb_{0.5} $$ O_{14} $grown by the Czochralski method (Ir crucible, 99%Ar + 1%$ O_{2} $, growth direction) have been studied by neutron diffraction for the first time. The compositions of the upper and lower parts are found to differ (($ La_{2.935(2)} $□0.065)($ Ga_{0.450} $$ Nb_{0.550(3)} $)$ Ga_{3} $($ Ga_{1.965(4)} $ □0.035)($ O_{13.90(1)} $ □0.10) and ($ La_{2.940(1)} $ □0.060)($ Ga_{0.590} $$ Nb_{0.410(2)} $)$ Ga_{5} $($ O_{13.82(1)} $ □0.18), respectively), and microtwin formation was observed in the upper part, with two unit cells related by the translation 1/2Z. Based on a comparison of the refined crystal composition and optical transmission spectra, the absorption bands at 30 000, 24 500, and 20 500 $ cm_{-1} $ were assigned to divacancies (2 VLa''', 3 VO..), oxygen vacancies, and color centers, respectively. A relationship between the crystal color and oxygen content is established. © Pleiades Publishing, Ltd. 2010 |
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Abstract The upper and lower parts of a single crystal with a nominal composition $ La_{3} $$ Ga_{5.5} $$ Nb_{0.5} $$ O_{14} $grown by the Czochralski method (Ir crucible, 99%Ar + 1%$ O_{2} $, growth direction) have been studied by neutron diffraction for the first time. The compositions of the upper and lower parts are found to differ (($ La_{2.935(2)} $□0.065)($ Ga_{0.450} $$ Nb_{0.550(3)} $)$ Ga_{3} $($ Ga_{1.965(4)} $ □0.035)($ O_{13.90(1)} $ □0.10) and ($ La_{2.940(1)} $ □0.060)($ Ga_{0.590} $$ Nb_{0.410(2)} $)$ Ga_{5} $($ O_{13.82(1)} $ □0.18), respectively), and microtwin formation was observed in the upper part, with two unit cells related by the translation 1/2Z. Based on a comparison of the refined crystal composition and optical transmission spectra, the absorption bands at 30 000, 24 500, and 20 500 $ cm_{-1} $ were assigned to divacancies (2 VLa''', 3 VO..), oxygen vacancies, and color centers, respectively. A relationship between the crystal color and oxygen content is established. © Pleiades Publishing, Ltd. 2010 |
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Abstract The upper and lower parts of a single crystal with a nominal composition $ La_{3} $$ Ga_{5.5} $$ Nb_{0.5} $$ O_{14} $grown by the Czochralski method (Ir crucible, 99%Ar + 1%$ O_{2} $, growth direction) have been studied by neutron diffraction for the first time. The compositions of the upper and lower parts are found to differ (($ La_{2.935(2)} $□0.065)($ Ga_{0.450} $$ Nb_{0.550(3)} $)$ Ga_{3} $($ Ga_{1.965(4)} $ □0.035)($ O_{13.90(1)} $ □0.10) and ($ La_{2.940(1)} $ □0.060)($ Ga_{0.590} $$ Nb_{0.410(2)} $)$ Ga_{5} $($ O_{13.82(1)} $ □0.18), respectively), and microtwin formation was observed in the upper part, with two unit cells related by the translation 1/2Z. Based on a comparison of the refined crystal composition and optical transmission spectra, the absorption bands at 30 000, 24 500, and 20 500 $ cm_{-1} $ were assigned to divacancies (2 VLa''', 3 VO..), oxygen vacancies, and color centers, respectively. A relationship between the crystal color and oxygen content is established. © Pleiades Publishing, Ltd. 2010 |
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