Electron paramagnetic resonance and luminescence of chromium in calcium germanate crystals
Abstract The luminescence of $ Ca_{2} $$ GeO_{4} $: $ Cr^{4+} $ single crystals at wavelengths in the range of 1.3 μm upon excitation with a 1-μ m semiconductor laser is investigated in the temperature range up to 573 K. At T<110 K, the $ Ca_{2} $$ GeO_{4} $: $ Cr^{4+} $ crystals are characterize...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Gorshkov, O. N. [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2002 |
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| Schlagwörter: |
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| Anmerkung: |
© MAIK "Nauka/Interperiodica" 2002 |
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| Übergeordnetes Werk: |
Enthalten in: Physics of the solid state - Nauka/Interperiodica, 1993, 44(2002), 1 vom: Jan., Seite 52-57 |
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| Übergeordnetes Werk: |
volume:44 ; year:2002 ; number:1 ; month:01 ; pages:52-57 |
| Links: |
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| DOI / URN: |
10.1134/1.1434482 |
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OLC204068901X |
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| 520 | |a Abstract The luminescence of $ Ca_{2} $$ GeO_{4} $: $ Cr^{4+} $ single crystals at wavelengths in the range of 1.3 μm upon excitation with a 1-μ m semiconductor laser is investigated in the temperature range up to 573 K. At T<110 K, the $ Ca_{2} $$ GeO_{4} $: $ Cr^{4+} $ crystals are characterized by the electron paramagnetic resonance, which is attributed to the $ Cr^{4+} $ ions substituted for $ Ge^{4+} $ ions. The components of the g tensor and its principal axes are determined. It is revealed that the $ Cr^{4+} $ impurity centers in calcium germanate affect the crystal symmetry to a lesser degree compared to $ Cr^{4+} $ ions in forsterite. The observed deviation of the temperature dependence of the electron paramagnetic resonance from the Curie law is explained by the transition to the excited state with a low activation energy, as is the case in impurity 3d ions in diamond-like semiconductors. The inference is made that the giant effective degeneracy multiplicity of the excited state is associated with the initiation of soft phonon modes in the crystal upon excitation of the defect. | ||
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10.1134/1.1434482 doi (DE-627)OLC204068901X (DE-He213)1.1434482-p DE-627 ger DE-627 rakwb eng 530 VZ Gorshkov, O. N. verfasserin aut Electron paramagnetic resonance and luminescence of chromium in calcium germanate crystals 2002 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © MAIK "Nauka/Interperiodica" 2002 Abstract The luminescence of $ Ca_{2} $$ GeO_{4} $: $ Cr^{4+} $ single crystals at wavelengths in the range of 1.3 μm upon excitation with a 1-μ m semiconductor laser is investigated in the temperature range up to 573 K. At T<110 K, the $ Ca_{2} $$ GeO_{4} $: $ Cr^{4+} $ crystals are characterized by the electron paramagnetic resonance, which is attributed to the $ Cr^{4+} $ ions substituted for $ Ge^{4+} $ ions. The components of the g tensor and its principal axes are determined. It is revealed that the $ Cr^{4+} $ impurity centers in calcium germanate affect the crystal symmetry to a lesser degree compared to $ Cr^{4+} $ ions in forsterite. The observed deviation of the temperature dependence of the electron paramagnetic resonance from the Curie law is explained by the transition to the excited state with a low activation energy, as is the case in impurity 3d ions in diamond-like semiconductors. The inference is made that the giant effective degeneracy multiplicity of the excited state is associated with the initiation of soft phonon modes in the crystal upon excitation of the defect. Activation Energy Excited State Electron Paramagnetic Resonance Principal Axis Semiconductor Laser Demidov, E. S. aut Tyurin, S. A. aut Chigineva, A. B. aut Chigirinskii, Yu. I. aut Enthalten in Physics of the solid state Nauka/Interperiodica, 1993 44(2002), 1 vom: Jan., Seite 52-57 (DE-627)16567332X (DE-600)1159011-7 (DE-576)038490706 1063-7834 nnns volume:44 year:2002 number:1 month:01 pages:52-57 https://doi.org/10.1134/1.1434482 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_40 GBV_ILN_70 GBV_ILN_2014 GBV_ILN_4116 GBV_ILN_4306 GBV_ILN_4700 AR 44 2002 1 01 52-57 |
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10.1134/1.1434482 doi (DE-627)OLC204068901X (DE-He213)1.1434482-p DE-627 ger DE-627 rakwb eng 530 VZ Gorshkov, O. N. verfasserin aut Electron paramagnetic resonance and luminescence of chromium in calcium germanate crystals 2002 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © MAIK "Nauka/Interperiodica" 2002 Abstract The luminescence of $ Ca_{2} $$ GeO_{4} $: $ Cr^{4+} $ single crystals at wavelengths in the range of 1.3 μm upon excitation with a 1-μ m semiconductor laser is investigated in the temperature range up to 573 K. At T<110 K, the $ Ca_{2} $$ GeO_{4} $: $ Cr^{4+} $ crystals are characterized by the electron paramagnetic resonance, which is attributed to the $ Cr^{4+} $ ions substituted for $ Ge^{4+} $ ions. The components of the g tensor and its principal axes are determined. It is revealed that the $ Cr^{4+} $ impurity centers in calcium germanate affect the crystal symmetry to a lesser degree compared to $ Cr^{4+} $ ions in forsterite. The observed deviation of the temperature dependence of the electron paramagnetic resonance from the Curie law is explained by the transition to the excited state with a low activation energy, as is the case in impurity 3d ions in diamond-like semiconductors. The inference is made that the giant effective degeneracy multiplicity of the excited state is associated with the initiation of soft phonon modes in the crystal upon excitation of the defect. Activation Energy Excited State Electron Paramagnetic Resonance Principal Axis Semiconductor Laser Demidov, E. S. aut Tyurin, S. A. aut Chigineva, A. B. aut Chigirinskii, Yu. I. aut Enthalten in Physics of the solid state Nauka/Interperiodica, 1993 44(2002), 1 vom: Jan., Seite 52-57 (DE-627)16567332X (DE-600)1159011-7 (DE-576)038490706 1063-7834 nnns volume:44 year:2002 number:1 month:01 pages:52-57 https://doi.org/10.1134/1.1434482 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_40 GBV_ILN_70 GBV_ILN_2014 GBV_ILN_4116 GBV_ILN_4306 GBV_ILN_4700 AR 44 2002 1 01 52-57 |
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10.1134/1.1434482 doi (DE-627)OLC204068901X (DE-He213)1.1434482-p DE-627 ger DE-627 rakwb eng 530 VZ Gorshkov, O. N. verfasserin aut Electron paramagnetic resonance and luminescence of chromium in calcium germanate crystals 2002 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © MAIK "Nauka/Interperiodica" 2002 Abstract The luminescence of $ Ca_{2} $$ GeO_{4} $: $ Cr^{4+} $ single crystals at wavelengths in the range of 1.3 μm upon excitation with a 1-μ m semiconductor laser is investigated in the temperature range up to 573 K. At T<110 K, the $ Ca_{2} $$ GeO_{4} $: $ Cr^{4+} $ crystals are characterized by the electron paramagnetic resonance, which is attributed to the $ Cr^{4+} $ ions substituted for $ Ge^{4+} $ ions. The components of the g tensor and its principal axes are determined. It is revealed that the $ Cr^{4+} $ impurity centers in calcium germanate affect the crystal symmetry to a lesser degree compared to $ Cr^{4+} $ ions in forsterite. The observed deviation of the temperature dependence of the electron paramagnetic resonance from the Curie law is explained by the transition to the excited state with a low activation energy, as is the case in impurity 3d ions in diamond-like semiconductors. The inference is made that the giant effective degeneracy multiplicity of the excited state is associated with the initiation of soft phonon modes in the crystal upon excitation of the defect. Activation Energy Excited State Electron Paramagnetic Resonance Principal Axis Semiconductor Laser Demidov, E. S. aut Tyurin, S. A. aut Chigineva, A. B. aut Chigirinskii, Yu. I. aut Enthalten in Physics of the solid state Nauka/Interperiodica, 1993 44(2002), 1 vom: Jan., Seite 52-57 (DE-627)16567332X (DE-600)1159011-7 (DE-576)038490706 1063-7834 nnns volume:44 year:2002 number:1 month:01 pages:52-57 https://doi.org/10.1134/1.1434482 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_40 GBV_ILN_70 GBV_ILN_2014 GBV_ILN_4116 GBV_ILN_4306 GBV_ILN_4700 AR 44 2002 1 01 52-57 |
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10.1134/1.1434482 doi (DE-627)OLC204068901X (DE-He213)1.1434482-p DE-627 ger DE-627 rakwb eng 530 VZ Gorshkov, O. N. verfasserin aut Electron paramagnetic resonance and luminescence of chromium in calcium germanate crystals 2002 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © MAIK "Nauka/Interperiodica" 2002 Abstract The luminescence of $ Ca_{2} $$ GeO_{4} $: $ Cr^{4+} $ single crystals at wavelengths in the range of 1.3 μm upon excitation with a 1-μ m semiconductor laser is investigated in the temperature range up to 573 K. At T<110 K, the $ Ca_{2} $$ GeO_{4} $: $ Cr^{4+} $ crystals are characterized by the electron paramagnetic resonance, which is attributed to the $ Cr^{4+} $ ions substituted for $ Ge^{4+} $ ions. The components of the g tensor and its principal axes are determined. It is revealed that the $ Cr^{4+} $ impurity centers in calcium germanate affect the crystal symmetry to a lesser degree compared to $ Cr^{4+} $ ions in forsterite. The observed deviation of the temperature dependence of the electron paramagnetic resonance from the Curie law is explained by the transition to the excited state with a low activation energy, as is the case in impurity 3d ions in diamond-like semiconductors. The inference is made that the giant effective degeneracy multiplicity of the excited state is associated with the initiation of soft phonon modes in the crystal upon excitation of the defect. Activation Energy Excited State Electron Paramagnetic Resonance Principal Axis Semiconductor Laser Demidov, E. S. aut Tyurin, S. A. aut Chigineva, A. B. aut Chigirinskii, Yu. I. aut Enthalten in Physics of the solid state Nauka/Interperiodica, 1993 44(2002), 1 vom: Jan., Seite 52-57 (DE-627)16567332X (DE-600)1159011-7 (DE-576)038490706 1063-7834 nnns volume:44 year:2002 number:1 month:01 pages:52-57 https://doi.org/10.1134/1.1434482 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_40 GBV_ILN_70 GBV_ILN_2014 GBV_ILN_4116 GBV_ILN_4306 GBV_ILN_4700 AR 44 2002 1 01 52-57 |
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10.1134/1.1434482 doi (DE-627)OLC204068901X (DE-He213)1.1434482-p DE-627 ger DE-627 rakwb eng 530 VZ Gorshkov, O. N. verfasserin aut Electron paramagnetic resonance and luminescence of chromium in calcium germanate crystals 2002 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © MAIK "Nauka/Interperiodica" 2002 Abstract The luminescence of $ Ca_{2} $$ GeO_{4} $: $ Cr^{4+} $ single crystals at wavelengths in the range of 1.3 μm upon excitation with a 1-μ m semiconductor laser is investigated in the temperature range up to 573 K. At T<110 K, the $ Ca_{2} $$ GeO_{4} $: $ Cr^{4+} $ crystals are characterized by the electron paramagnetic resonance, which is attributed to the $ Cr^{4+} $ ions substituted for $ Ge^{4+} $ ions. The components of the g tensor and its principal axes are determined. It is revealed that the $ Cr^{4+} $ impurity centers in calcium germanate affect the crystal symmetry to a lesser degree compared to $ Cr^{4+} $ ions in forsterite. The observed deviation of the temperature dependence of the electron paramagnetic resonance from the Curie law is explained by the transition to the excited state with a low activation energy, as is the case in impurity 3d ions in diamond-like semiconductors. The inference is made that the giant effective degeneracy multiplicity of the excited state is associated with the initiation of soft phonon modes in the crystal upon excitation of the defect. Activation Energy Excited State Electron Paramagnetic Resonance Principal Axis Semiconductor Laser Demidov, E. S. aut Tyurin, S. A. aut Chigineva, A. B. aut Chigirinskii, Yu. I. aut Enthalten in Physics of the solid state Nauka/Interperiodica, 1993 44(2002), 1 vom: Jan., Seite 52-57 (DE-627)16567332X (DE-600)1159011-7 (DE-576)038490706 1063-7834 nnns volume:44 year:2002 number:1 month:01 pages:52-57 https://doi.org/10.1134/1.1434482 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY GBV_ILN_40 GBV_ILN_70 GBV_ILN_2014 GBV_ILN_4116 GBV_ILN_4306 GBV_ILN_4700 AR 44 2002 1 01 52-57 |
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Gorshkov, O. N. Demidov, E. S. Tyurin, S. A. Chigineva, A. B. Chigirinskii, Yu. I. |
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Gorshkov, O. N. |
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530 |
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electron paramagnetic resonance and luminescence of chromium in calcium germanate crystals |
| title_auth |
Electron paramagnetic resonance and luminescence of chromium in calcium germanate crystals |
| abstract |
Abstract The luminescence of $ Ca_{2} $$ GeO_{4} $: $ Cr^{4+} $ single crystals at wavelengths in the range of 1.3 μm upon excitation with a 1-μ m semiconductor laser is investigated in the temperature range up to 573 K. At T<110 K, the $ Ca_{2} $$ GeO_{4} $: $ Cr^{4+} $ crystals are characterized by the electron paramagnetic resonance, which is attributed to the $ Cr^{4+} $ ions substituted for $ Ge^{4+} $ ions. The components of the g tensor and its principal axes are determined. It is revealed that the $ Cr^{4+} $ impurity centers in calcium germanate affect the crystal symmetry to a lesser degree compared to $ Cr^{4+} $ ions in forsterite. The observed deviation of the temperature dependence of the electron paramagnetic resonance from the Curie law is explained by the transition to the excited state with a low activation energy, as is the case in impurity 3d ions in diamond-like semiconductors. The inference is made that the giant effective degeneracy multiplicity of the excited state is associated with the initiation of soft phonon modes in the crystal upon excitation of the defect. © MAIK "Nauka/Interperiodica" 2002 |
| abstractGer |
Abstract The luminescence of $ Ca_{2} $$ GeO_{4} $: $ Cr^{4+} $ single crystals at wavelengths in the range of 1.3 μm upon excitation with a 1-μ m semiconductor laser is investigated in the temperature range up to 573 K. At T<110 K, the $ Ca_{2} $$ GeO_{4} $: $ Cr^{4+} $ crystals are characterized by the electron paramagnetic resonance, which is attributed to the $ Cr^{4+} $ ions substituted for $ Ge^{4+} $ ions. The components of the g tensor and its principal axes are determined. It is revealed that the $ Cr^{4+} $ impurity centers in calcium germanate affect the crystal symmetry to a lesser degree compared to $ Cr^{4+} $ ions in forsterite. The observed deviation of the temperature dependence of the electron paramagnetic resonance from the Curie law is explained by the transition to the excited state with a low activation energy, as is the case in impurity 3d ions in diamond-like semiconductors. The inference is made that the giant effective degeneracy multiplicity of the excited state is associated with the initiation of soft phonon modes in the crystal upon excitation of the defect. © MAIK "Nauka/Interperiodica" 2002 |
| abstract_unstemmed |
Abstract The luminescence of $ Ca_{2} $$ GeO_{4} $: $ Cr^{4+} $ single crystals at wavelengths in the range of 1.3 μm upon excitation with a 1-μ m semiconductor laser is investigated in the temperature range up to 573 K. At T<110 K, the $ Ca_{2} $$ GeO_{4} $: $ Cr^{4+} $ crystals are characterized by the electron paramagnetic resonance, which is attributed to the $ Cr^{4+} $ ions substituted for $ Ge^{4+} $ ions. The components of the g tensor and its principal axes are determined. It is revealed that the $ Cr^{4+} $ impurity centers in calcium germanate affect the crystal symmetry to a lesser degree compared to $ Cr^{4+} $ ions in forsterite. The observed deviation of the temperature dependence of the electron paramagnetic resonance from the Curie law is explained by the transition to the excited state with a low activation energy, as is the case in impurity 3d ions in diamond-like semiconductors. The inference is made that the giant effective degeneracy multiplicity of the excited state is associated with the initiation of soft phonon modes in the crystal upon excitation of the defect. © MAIK "Nauka/Interperiodica" 2002 |
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Electron paramagnetic resonance and luminescence of chromium in calcium germanate crystals |
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