Origin of the color in cobalt-doped quartz
Abstract Synthetic Co-doped quartz was grown hydrothermally in steel autoclaves at the Technological Center of Minas Gerais (CETEC), Brazil. The quartz samples, originally yellow in the as-grown state acquired blue coloration after prolonged heat treatment times at 500°C near the alpha–beta transiti...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
de Miranda Pinto, Luiz Carlos B. [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2011 |
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| Schlagwörter: |
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| Anmerkung: |
© Springer-Verlag 2011 |
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| Übergeordnetes Werk: |
Enthalten in: Physics and chemistry of minerals - Springer-Verlag, 1977, 38(2011), 8 vom: 15. Mai, Seite 623-629 |
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| Übergeordnetes Werk: |
volume:38 ; year:2011 ; number:8 ; day:15 ; month:05 ; pages:623-629 |
| Links: |
|---|
| DOI / URN: |
10.1007/s00269-011-0434-3 |
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OLC2072370183 |
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| 520 | |a Abstract Synthetic Co-doped quartz was grown hydrothermally in steel autoclaves at the Technological Center of Minas Gerais (CETEC), Brazil. The quartz samples, originally yellow in the as-grown state acquired blue coloration after prolonged heat treatment times at 500°C near the alpha–beta transition temperature. UV–VIS–NIR absorption spectroscopy shows the characteristic spectra of $ Co^{3+} $ before heat treatment. After heat treatment, the optical absorption spectrum is dominated by two split-triplet bands the first in the near infrared region centered at about 6,700 $ cm^{−1} $ (1,490 nm) and the second in the visible spectral range at about 16,900 $ cm^{−1} $ (590 nm). Both split-triplet bands are typical for $ Co^{2+} $ ions in tetrahedral coordination environments. From the absence of electron paramagnetic resonance (EPR) spectra, we conclude that the $ Co^{2+} $ found in the optical absorption spectra of the blue quartz is not due to an isolated structural site in the quartz lattice. Instead, the blue color is associated with electronic transitions of $ Co^{2+} $ in small inclusions in which the Co site has tetrahedral symmetry. The non-observation of polarization-depend optical absorption spectra is also in agreement with this model. The results for $ Co^{2+} $ in quartz are different from Co-bearing spinel and staurolite and other silicates like orthopyroxene, olivine, and beryls. The formation process of the color center is discussed. | ||
| 650 | 4 | |a Synthetic quartz | |
| 650 | 4 | |a Color | |
| 650 | 4 | |a Cobalt | |
| 650 | 4 | |a Electron paramagnetic resonance | |
| 650 | 4 | |a Optical absorption | |
| 700 | 1 | |a Righi, Ariete |4 aut | |
| 700 | 1 | |a Lameiras, Fernando Soares |4 aut | |
| 700 | 1 | |a da Silva Araujo, Fernando Gabriel |4 aut | |
| 700 | 1 | |a Krambrock, Klaus |4 aut | |
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10.1007/s00269-011-0434-3 doi (DE-627)OLC2072370183 (DE-He213)s00269-011-0434-3-p DE-627 ger DE-627 rakwb eng 550 540 530 VZ BIODIV DE-30 fid de Miranda Pinto, Luiz Carlos B. verfasserin aut Origin of the color in cobalt-doped quartz 2011 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 2011 Abstract Synthetic Co-doped quartz was grown hydrothermally in steel autoclaves at the Technological Center of Minas Gerais (CETEC), Brazil. The quartz samples, originally yellow in the as-grown state acquired blue coloration after prolonged heat treatment times at 500°C near the alpha–beta transition temperature. UV–VIS–NIR absorption spectroscopy shows the characteristic spectra of $ Co^{3+} $ before heat treatment. After heat treatment, the optical absorption spectrum is dominated by two split-triplet bands the first in the near infrared region centered at about 6,700 $ cm^{−1} $ (1,490 nm) and the second in the visible spectral range at about 16,900 $ cm^{−1} $ (590 nm). Both split-triplet bands are typical for $ Co^{2+} $ ions in tetrahedral coordination environments. From the absence of electron paramagnetic resonance (EPR) spectra, we conclude that the $ Co^{2+} $ found in the optical absorption spectra of the blue quartz is not due to an isolated structural site in the quartz lattice. Instead, the blue color is associated with electronic transitions of $ Co^{2+} $ in small inclusions in which the Co site has tetrahedral symmetry. The non-observation of polarization-depend optical absorption spectra is also in agreement with this model. The results for $ Co^{2+} $ in quartz are different from Co-bearing spinel and staurolite and other silicates like orthopyroxene, olivine, and beryls. The formation process of the color center is discussed. Synthetic quartz Color Cobalt Electron paramagnetic resonance Optical absorption Righi, Ariete aut Lameiras, Fernando Soares aut da Silva Araujo, Fernando Gabriel aut Krambrock, Klaus aut Enthalten in Physics and chemistry of minerals Springer-Verlag, 1977 38(2011), 8 vom: 15. Mai, Seite 623-629 (DE-627)129323039 (DE-600)131393-9 (DE-576)014557398 0342-1791 nnns volume:38 year:2011 number:8 day:15 month:05 pages:623-629 https://doi.org/10.1007/s00269-011-0434-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC FID-BIODIV SSG-OLC-PHY SSG-OLC-CHE SSG-OLC-GEO SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-GGO GBV_ILN_21 GBV_ILN_32 GBV_ILN_40 GBV_ILN_70 GBV_ILN_2003 GBV_ILN_2018 GBV_ILN_2027 GBV_ILN_4277 GBV_ILN_4323 AR 38 2011 8 15 05 623-629 |
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10.1007/s00269-011-0434-3 doi (DE-627)OLC2072370183 (DE-He213)s00269-011-0434-3-p DE-627 ger DE-627 rakwb eng 550 540 530 VZ BIODIV DE-30 fid de Miranda Pinto, Luiz Carlos B. verfasserin aut Origin of the color in cobalt-doped quartz 2011 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 2011 Abstract Synthetic Co-doped quartz was grown hydrothermally in steel autoclaves at the Technological Center of Minas Gerais (CETEC), Brazil. The quartz samples, originally yellow in the as-grown state acquired blue coloration after prolonged heat treatment times at 500°C near the alpha–beta transition temperature. UV–VIS–NIR absorption spectroscopy shows the characteristic spectra of $ Co^{3+} $ before heat treatment. After heat treatment, the optical absorption spectrum is dominated by two split-triplet bands the first in the near infrared region centered at about 6,700 $ cm^{−1} $ (1,490 nm) and the second in the visible spectral range at about 16,900 $ cm^{−1} $ (590 nm). Both split-triplet bands are typical for $ Co^{2+} $ ions in tetrahedral coordination environments. From the absence of electron paramagnetic resonance (EPR) spectra, we conclude that the $ Co^{2+} $ found in the optical absorption spectra of the blue quartz is not due to an isolated structural site in the quartz lattice. Instead, the blue color is associated with electronic transitions of $ Co^{2+} $ in small inclusions in which the Co site has tetrahedral symmetry. The non-observation of polarization-depend optical absorption spectra is also in agreement with this model. The results for $ Co^{2+} $ in quartz are different from Co-bearing spinel and staurolite and other silicates like orthopyroxene, olivine, and beryls. The formation process of the color center is discussed. Synthetic quartz Color Cobalt Electron paramagnetic resonance Optical absorption Righi, Ariete aut Lameiras, Fernando Soares aut da Silva Araujo, Fernando Gabriel aut Krambrock, Klaus aut Enthalten in Physics and chemistry of minerals Springer-Verlag, 1977 38(2011), 8 vom: 15. Mai, Seite 623-629 (DE-627)129323039 (DE-600)131393-9 (DE-576)014557398 0342-1791 nnns volume:38 year:2011 number:8 day:15 month:05 pages:623-629 https://doi.org/10.1007/s00269-011-0434-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC FID-BIODIV SSG-OLC-PHY SSG-OLC-CHE SSG-OLC-GEO SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-GGO GBV_ILN_21 GBV_ILN_32 GBV_ILN_40 GBV_ILN_70 GBV_ILN_2003 GBV_ILN_2018 GBV_ILN_2027 GBV_ILN_4277 GBV_ILN_4323 AR 38 2011 8 15 05 623-629 |
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10.1007/s00269-011-0434-3 doi (DE-627)OLC2072370183 (DE-He213)s00269-011-0434-3-p DE-627 ger DE-627 rakwb eng 550 540 530 VZ BIODIV DE-30 fid de Miranda Pinto, Luiz Carlos B. verfasserin aut Origin of the color in cobalt-doped quartz 2011 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 2011 Abstract Synthetic Co-doped quartz was grown hydrothermally in steel autoclaves at the Technological Center of Minas Gerais (CETEC), Brazil. The quartz samples, originally yellow in the as-grown state acquired blue coloration after prolonged heat treatment times at 500°C near the alpha–beta transition temperature. UV–VIS–NIR absorption spectroscopy shows the characteristic spectra of $ Co^{3+} $ before heat treatment. After heat treatment, the optical absorption spectrum is dominated by two split-triplet bands the first in the near infrared region centered at about 6,700 $ cm^{−1} $ (1,490 nm) and the second in the visible spectral range at about 16,900 $ cm^{−1} $ (590 nm). Both split-triplet bands are typical for $ Co^{2+} $ ions in tetrahedral coordination environments. From the absence of electron paramagnetic resonance (EPR) spectra, we conclude that the $ Co^{2+} $ found in the optical absorption spectra of the blue quartz is not due to an isolated structural site in the quartz lattice. Instead, the blue color is associated with electronic transitions of $ Co^{2+} $ in small inclusions in which the Co site has tetrahedral symmetry. The non-observation of polarization-depend optical absorption spectra is also in agreement with this model. The results for $ Co^{2+} $ in quartz are different from Co-bearing spinel and staurolite and other silicates like orthopyroxene, olivine, and beryls. The formation process of the color center is discussed. Synthetic quartz Color Cobalt Electron paramagnetic resonance Optical absorption Righi, Ariete aut Lameiras, Fernando Soares aut da Silva Araujo, Fernando Gabriel aut Krambrock, Klaus aut Enthalten in Physics and chemistry of minerals Springer-Verlag, 1977 38(2011), 8 vom: 15. Mai, Seite 623-629 (DE-627)129323039 (DE-600)131393-9 (DE-576)014557398 0342-1791 nnns volume:38 year:2011 number:8 day:15 month:05 pages:623-629 https://doi.org/10.1007/s00269-011-0434-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC FID-BIODIV SSG-OLC-PHY SSG-OLC-CHE SSG-OLC-GEO SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-GGO GBV_ILN_21 GBV_ILN_32 GBV_ILN_40 GBV_ILN_70 GBV_ILN_2003 GBV_ILN_2018 GBV_ILN_2027 GBV_ILN_4277 GBV_ILN_4323 AR 38 2011 8 15 05 623-629 |
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10.1007/s00269-011-0434-3 doi (DE-627)OLC2072370183 (DE-He213)s00269-011-0434-3-p DE-627 ger DE-627 rakwb eng 550 540 530 VZ BIODIV DE-30 fid de Miranda Pinto, Luiz Carlos B. verfasserin aut Origin of the color in cobalt-doped quartz 2011 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 2011 Abstract Synthetic Co-doped quartz was grown hydrothermally in steel autoclaves at the Technological Center of Minas Gerais (CETEC), Brazil. The quartz samples, originally yellow in the as-grown state acquired blue coloration after prolonged heat treatment times at 500°C near the alpha–beta transition temperature. UV–VIS–NIR absorption spectroscopy shows the characteristic spectra of $ Co^{3+} $ before heat treatment. After heat treatment, the optical absorption spectrum is dominated by two split-triplet bands the first in the near infrared region centered at about 6,700 $ cm^{−1} $ (1,490 nm) and the second in the visible spectral range at about 16,900 $ cm^{−1} $ (590 nm). Both split-triplet bands are typical for $ Co^{2+} $ ions in tetrahedral coordination environments. From the absence of electron paramagnetic resonance (EPR) spectra, we conclude that the $ Co^{2+} $ found in the optical absorption spectra of the blue quartz is not due to an isolated structural site in the quartz lattice. Instead, the blue color is associated with electronic transitions of $ Co^{2+} $ in small inclusions in which the Co site has tetrahedral symmetry. The non-observation of polarization-depend optical absorption spectra is also in agreement with this model. The results for $ Co^{2+} $ in quartz are different from Co-bearing spinel and staurolite and other silicates like orthopyroxene, olivine, and beryls. The formation process of the color center is discussed. Synthetic quartz Color Cobalt Electron paramagnetic resonance Optical absorption Righi, Ariete aut Lameiras, Fernando Soares aut da Silva Araujo, Fernando Gabriel aut Krambrock, Klaus aut Enthalten in Physics and chemistry of minerals Springer-Verlag, 1977 38(2011), 8 vom: 15. Mai, Seite 623-629 (DE-627)129323039 (DE-600)131393-9 (DE-576)014557398 0342-1791 nnns volume:38 year:2011 number:8 day:15 month:05 pages:623-629 https://doi.org/10.1007/s00269-011-0434-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC FID-BIODIV SSG-OLC-PHY SSG-OLC-CHE SSG-OLC-GEO SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-GGO GBV_ILN_21 GBV_ILN_32 GBV_ILN_40 GBV_ILN_70 GBV_ILN_2003 GBV_ILN_2018 GBV_ILN_2027 GBV_ILN_4277 GBV_ILN_4323 AR 38 2011 8 15 05 623-629 |
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10.1007/s00269-011-0434-3 doi (DE-627)OLC2072370183 (DE-He213)s00269-011-0434-3-p DE-627 ger DE-627 rakwb eng 550 540 530 VZ BIODIV DE-30 fid de Miranda Pinto, Luiz Carlos B. verfasserin aut Origin of the color in cobalt-doped quartz 2011 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 2011 Abstract Synthetic Co-doped quartz was grown hydrothermally in steel autoclaves at the Technological Center of Minas Gerais (CETEC), Brazil. The quartz samples, originally yellow in the as-grown state acquired blue coloration after prolonged heat treatment times at 500°C near the alpha–beta transition temperature. UV–VIS–NIR absorption spectroscopy shows the characteristic spectra of $ Co^{3+} $ before heat treatment. After heat treatment, the optical absorption spectrum is dominated by two split-triplet bands the first in the near infrared region centered at about 6,700 $ cm^{−1} $ (1,490 nm) and the second in the visible spectral range at about 16,900 $ cm^{−1} $ (590 nm). Both split-triplet bands are typical for $ Co^{2+} $ ions in tetrahedral coordination environments. From the absence of electron paramagnetic resonance (EPR) spectra, we conclude that the $ Co^{2+} $ found in the optical absorption spectra of the blue quartz is not due to an isolated structural site in the quartz lattice. Instead, the blue color is associated with electronic transitions of $ Co^{2+} $ in small inclusions in which the Co site has tetrahedral symmetry. The non-observation of polarization-depend optical absorption spectra is also in agreement with this model. The results for $ Co^{2+} $ in quartz are different from Co-bearing spinel and staurolite and other silicates like orthopyroxene, olivine, and beryls. The formation process of the color center is discussed. Synthetic quartz Color Cobalt Electron paramagnetic resonance Optical absorption Righi, Ariete aut Lameiras, Fernando Soares aut da Silva Araujo, Fernando Gabriel aut Krambrock, Klaus aut Enthalten in Physics and chemistry of minerals Springer-Verlag, 1977 38(2011), 8 vom: 15. Mai, Seite 623-629 (DE-627)129323039 (DE-600)131393-9 (DE-576)014557398 0342-1791 nnns volume:38 year:2011 number:8 day:15 month:05 pages:623-629 https://doi.org/10.1007/s00269-011-0434-3 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC FID-BIODIV SSG-OLC-PHY SSG-OLC-CHE SSG-OLC-GEO SSG-OLC-PHA SSG-OLC-DE-84 SSG-OPC-GGO GBV_ILN_21 GBV_ILN_32 GBV_ILN_40 GBV_ILN_70 GBV_ILN_2003 GBV_ILN_2018 GBV_ILN_2027 GBV_ILN_4277 GBV_ILN_4323 AR 38 2011 8 15 05 623-629 |
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Enthalten in Physics and chemistry of minerals 38(2011), 8 vom: 15. Mai, Seite 623-629 volume:38 year:2011 number:8 day:15 month:05 pages:623-629 |
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origin of the color in cobalt-doped quartz |
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Origin of the color in cobalt-doped quartz |
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Abstract Synthetic Co-doped quartz was grown hydrothermally in steel autoclaves at the Technological Center of Minas Gerais (CETEC), Brazil. The quartz samples, originally yellow in the as-grown state acquired blue coloration after prolonged heat treatment times at 500°C near the alpha–beta transition temperature. UV–VIS–NIR absorption spectroscopy shows the characteristic spectra of $ Co^{3+} $ before heat treatment. After heat treatment, the optical absorption spectrum is dominated by two split-triplet bands the first in the near infrared region centered at about 6,700 $ cm^{−1} $ (1,490 nm) and the second in the visible spectral range at about 16,900 $ cm^{−1} $ (590 nm). Both split-triplet bands are typical for $ Co^{2+} $ ions in tetrahedral coordination environments. From the absence of electron paramagnetic resonance (EPR) spectra, we conclude that the $ Co^{2+} $ found in the optical absorption spectra of the blue quartz is not due to an isolated structural site in the quartz lattice. Instead, the blue color is associated with electronic transitions of $ Co^{2+} $ in small inclusions in which the Co site has tetrahedral symmetry. The non-observation of polarization-depend optical absorption spectra is also in agreement with this model. The results for $ Co^{2+} $ in quartz are different from Co-bearing spinel and staurolite and other silicates like orthopyroxene, olivine, and beryls. The formation process of the color center is discussed. © Springer-Verlag 2011 |
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Abstract Synthetic Co-doped quartz was grown hydrothermally in steel autoclaves at the Technological Center of Minas Gerais (CETEC), Brazil. The quartz samples, originally yellow in the as-grown state acquired blue coloration after prolonged heat treatment times at 500°C near the alpha–beta transition temperature. UV–VIS–NIR absorption spectroscopy shows the characteristic spectra of $ Co^{3+} $ before heat treatment. After heat treatment, the optical absorption spectrum is dominated by two split-triplet bands the first in the near infrared region centered at about 6,700 $ cm^{−1} $ (1,490 nm) and the second in the visible spectral range at about 16,900 $ cm^{−1} $ (590 nm). Both split-triplet bands are typical for $ Co^{2+} $ ions in tetrahedral coordination environments. From the absence of electron paramagnetic resonance (EPR) spectra, we conclude that the $ Co^{2+} $ found in the optical absorption spectra of the blue quartz is not due to an isolated structural site in the quartz lattice. Instead, the blue color is associated with electronic transitions of $ Co^{2+} $ in small inclusions in which the Co site has tetrahedral symmetry. The non-observation of polarization-depend optical absorption spectra is also in agreement with this model. The results for $ Co^{2+} $ in quartz are different from Co-bearing spinel and staurolite and other silicates like orthopyroxene, olivine, and beryls. The formation process of the color center is discussed. © Springer-Verlag 2011 |
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Abstract Synthetic Co-doped quartz was grown hydrothermally in steel autoclaves at the Technological Center of Minas Gerais (CETEC), Brazil. The quartz samples, originally yellow in the as-grown state acquired blue coloration after prolonged heat treatment times at 500°C near the alpha–beta transition temperature. UV–VIS–NIR absorption spectroscopy shows the characteristic spectra of $ Co^{3+} $ before heat treatment. After heat treatment, the optical absorption spectrum is dominated by two split-triplet bands the first in the near infrared region centered at about 6,700 $ cm^{−1} $ (1,490 nm) and the second in the visible spectral range at about 16,900 $ cm^{−1} $ (590 nm). Both split-triplet bands are typical for $ Co^{2+} $ ions in tetrahedral coordination environments. From the absence of electron paramagnetic resonance (EPR) spectra, we conclude that the $ Co^{2+} $ found in the optical absorption spectra of the blue quartz is not due to an isolated structural site in the quartz lattice. Instead, the blue color is associated with electronic transitions of $ Co^{2+} $ in small inclusions in which the Co site has tetrahedral symmetry. The non-observation of polarization-depend optical absorption spectra is also in agreement with this model. The results for $ Co^{2+} $ in quartz are different from Co-bearing spinel and staurolite and other silicates like orthopyroxene, olivine, and beryls. The formation process of the color center is discussed. © Springer-Verlag 2011 |
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