Gel combustion synthesis of $ La_{x} %$ Gd_{14–x} %$ B_{6} %$ Ge_{2} %$ O_{34} $ (x = 3 and 4) codoped with $ Yb^{3+} $–$ Er^{3+} $ and $ Yb^{3+} $–$ Tm^{3+} $ active ions
Abstract This paper reports the gel combustion synthesis of $ La_{x} %$ Gd_{14–x} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (x = 3 and 4) germanate borates codoped with $ Yb^{3+} $–$ Er^{3+} $ and $ Yb^{3+} $–$ Tm^{3+} $ active ions. The synthesized compounds are isostructural with $ Gd_{14} %$ Ge_{2} %$ B_{6}...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Krut’ko, V. A. [verfasserIn] Komova, M. G. [verfasserIn] Novikova, S. A. [verfasserIn] Pominova, D. V. [verfasserIn] |
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| Format: |
E-Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2015 |
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| Schlagwörter: |
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| Übergeordnetes Werk: |
Enthalten in: Inorganic materials - Dordrecht [u.a.] : Springer Science + Business Media B.V, 1996, 51(2015), 12 vom: 22. Okt., Seite 1270-1276 |
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| Übergeordnetes Werk: |
volume:51 ; year:2015 ; number:12 ; day:22 ; month:10 ; pages:1270-1276 |
| Links: |
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| DOI / URN: |
10.1134/S0020168515120031 |
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| Katalog-ID: |
SPR013220136 |
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| 100 | 1 | |a Krut’ko, V. A. |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Gel combustion synthesis of $ La_{x} %$ Gd_{14–x} %$ B_{6} %$ Ge_{2} %$ O_{34} $ (x = 3 and 4) codoped with $ Yb^{3+} $–$ Er^{3+} $ and $ Yb^{3+} $–$ Tm^{3+} $ active ions |
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| 520 | |a Abstract This paper reports the gel combustion synthesis of $ La_{x} %$ Gd_{14–x} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (x = 3 and 4) germanate borates codoped with $ Yb^{3+} $–$ Er^{3+} $ and $ Yb^{3+} $–$ Tm^{3+} $ active ions. The synthesized compounds are isostructural with $ Gd_{14} %$ Ge_{2} %$ B_{6} %$ O_{34} $ and crystallize in trigonal symmetry (sp. gr. P$ 3_{1} $). We have determined the unit-cell parameters of the synthesized mixed-cation germanate borates $ La_{3} %$ Gd_{9.74} %$ Yb_{0.84} %$ Tm_{0.42} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (a = b = 9.794 Å, c = 25.7913 Å, V = 2143 $ Å^{3} $) and $ La_{3.16} %$ Gd_{10} %$ Yb_{0.7} %$ Er_{0.14} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (a = b = 9.746 Å, c = 25.7450 Å, V = 2118 $ Å^{3} $) and assessed their thermal stability. The results demonstrate that the $ La_{x} %$ Gd_{14–x} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (x = 3 and 4) germanate borates codoped with $ Yb^{3+} $–$ Tm^{3+} $ and $ Yb^{3+} $–$ Er^{3+} $ active ions melt congruently at T = 1660 and 1700 K and crystallize with undercooling at T = 1620 and 1660 K, respectively. We have obtained an upconversion luminescence spectrum of the $ La_{3.16} %$ Gd_{10} %$ Yb_{0.7} %$ Er_{0.14} %$ Ge_{2} %$ B_{6} %$ O_{34} $ germanate borate. The spectrum shows two bands. The stronger band (in the green region) corresponds to two transitions: 2H11/2 → 4I15/2 (λ = 525 nm) and 4S3/2→ 4I15/2 (λ = 550 nm). The weaker band (in the red region) corresponds to the $ Er^{3+ 4} $F9/2→ 4I15/2 transition. | ||
| 650 | 4 | |a Combustion Synthesis |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Rare Earth Cation |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Trigonal Symmetry |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Orthoborate |7 (dpeaa)DE-He213 | |
| 650 | 4 | |a Redox Reac Tions |7 (dpeaa)DE-He213 | |
| 700 | 1 | |a Komova, M. G. |e verfasserin |4 aut | |
| 700 | 1 | |a Novikova, S. A. |e verfasserin |4 aut | |
| 700 | 1 | |a Pominova, D. V. |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Inorganic materials |d Dordrecht [u.a.] : Springer Science + Business Media B.V, 1996 |g 51(2015), 12 vom: 22. Okt., Seite 1270-1276 |w (DE-627)334292719 |w (DE-600)2057339-X |x 1608-3172 |7 nnns |
| 773 | 1 | 8 | |g volume:51 |g year:2015 |g number:12 |g day:22 |g month:10 |g pages:1270-1276 |
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10.1134/S0020168515120031 doi (DE-627)SPR013220136 (SPR)S0020168515120031-e DE-627 ger DE-627 rakwb eng 540 600 670 ASE 35.40 bkl Krut’ko, V. A. verfasserin aut Gel combustion synthesis of $ La_{x} %$ Gd_{14–x} %$ B_{6} %$ Ge_{2} %$ O_{34} $ (x = 3 and 4) codoped with $ Yb^{3+} $–$ Er^{3+} $ and $ Yb^{3+} $–$ Tm^{3+} $ active ions 2015 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract This paper reports the gel combustion synthesis of $ La_{x} %$ Gd_{14–x} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (x = 3 and 4) germanate borates codoped with $ Yb^{3+} $–$ Er^{3+} $ and $ Yb^{3+} $–$ Tm^{3+} $ active ions. The synthesized compounds are isostructural with $ Gd_{14} %$ Ge_{2} %$ B_{6} %$ O_{34} $ and crystallize in trigonal symmetry (sp. gr. P$ 3_{1} $). We have determined the unit-cell parameters of the synthesized mixed-cation germanate borates $ La_{3} %$ Gd_{9.74} %$ Yb_{0.84} %$ Tm_{0.42} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (a = b = 9.794 Å, c = 25.7913 Å, V = 2143 $ Å^{3} $) and $ La_{3.16} %$ Gd_{10} %$ Yb_{0.7} %$ Er_{0.14} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (a = b = 9.746 Å, c = 25.7450 Å, V = 2118 $ Å^{3} $) and assessed their thermal stability. The results demonstrate that the $ La_{x} %$ Gd_{14–x} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (x = 3 and 4) germanate borates codoped with $ Yb^{3+} $–$ Tm^{3+} $ and $ Yb^{3+} $–$ Er^{3+} $ active ions melt congruently at T = 1660 and 1700 K and crystallize with undercooling at T = 1620 and 1660 K, respectively. We have obtained an upconversion luminescence spectrum of the $ La_{3.16} %$ Gd_{10} %$ Yb_{0.7} %$ Er_{0.14} %$ Ge_{2} %$ B_{6} %$ O_{34} $ germanate borate. The spectrum shows two bands. The stronger band (in the green region) corresponds to two transitions: 2H11/2 → 4I15/2 (λ = 525 nm) and 4S3/2→ 4I15/2 (λ = 550 nm). The weaker band (in the red region) corresponds to the $ Er^{3+ 4} $F9/2→ 4I15/2 transition. Combustion Synthesis (dpeaa)DE-He213 Rare Earth Cation (dpeaa)DE-He213 Trigonal Symmetry (dpeaa)DE-He213 Orthoborate (dpeaa)DE-He213 Redox Reac Tions (dpeaa)DE-He213 Komova, M. G. verfasserin aut Novikova, S. A. verfasserin aut Pominova, D. V. verfasserin aut Enthalten in Inorganic materials Dordrecht [u.a.] : Springer Science + Business Media B.V, 1996 51(2015), 12 vom: 22. Okt., Seite 1270-1276 (DE-627)334292719 (DE-600)2057339-X 1608-3172 nnns volume:51 year:2015 number:12 day:22 month:10 pages:1270-1276 https://dx.doi.org/10.1134/S0020168515120031 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 35.40 ASE AR 51 2015 12 22 10 1270-1276 |
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10.1134/S0020168515120031 doi (DE-627)SPR013220136 (SPR)S0020168515120031-e DE-627 ger DE-627 rakwb eng 540 600 670 ASE 35.40 bkl Krut’ko, V. A. verfasserin aut Gel combustion synthesis of $ La_{x} %$ Gd_{14–x} %$ B_{6} %$ Ge_{2} %$ O_{34} $ (x = 3 and 4) codoped with $ Yb^{3+} $–$ Er^{3+} $ and $ Yb^{3+} $–$ Tm^{3+} $ active ions 2015 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract This paper reports the gel combustion synthesis of $ La_{x} %$ Gd_{14–x} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (x = 3 and 4) germanate borates codoped with $ Yb^{3+} $–$ Er^{3+} $ and $ Yb^{3+} $–$ Tm^{3+} $ active ions. The synthesized compounds are isostructural with $ Gd_{14} %$ Ge_{2} %$ B_{6} %$ O_{34} $ and crystallize in trigonal symmetry (sp. gr. P$ 3_{1} $). We have determined the unit-cell parameters of the synthesized mixed-cation germanate borates $ La_{3} %$ Gd_{9.74} %$ Yb_{0.84} %$ Tm_{0.42} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (a = b = 9.794 Å, c = 25.7913 Å, V = 2143 $ Å^{3} $) and $ La_{3.16} %$ Gd_{10} %$ Yb_{0.7} %$ Er_{0.14} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (a = b = 9.746 Å, c = 25.7450 Å, V = 2118 $ Å^{3} $) and assessed their thermal stability. The results demonstrate that the $ La_{x} %$ Gd_{14–x} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (x = 3 and 4) germanate borates codoped with $ Yb^{3+} $–$ Tm^{3+} $ and $ Yb^{3+} $–$ Er^{3+} $ active ions melt congruently at T = 1660 and 1700 K and crystallize with undercooling at T = 1620 and 1660 K, respectively. We have obtained an upconversion luminescence spectrum of the $ La_{3.16} %$ Gd_{10} %$ Yb_{0.7} %$ Er_{0.14} %$ Ge_{2} %$ B_{6} %$ O_{34} $ germanate borate. The spectrum shows two bands. The stronger band (in the green region) corresponds to two transitions: 2H11/2 → 4I15/2 (λ = 525 nm) and 4S3/2→ 4I15/2 (λ = 550 nm). The weaker band (in the red region) corresponds to the $ Er^{3+ 4} $F9/2→ 4I15/2 transition. Combustion Synthesis (dpeaa)DE-He213 Rare Earth Cation (dpeaa)DE-He213 Trigonal Symmetry (dpeaa)DE-He213 Orthoborate (dpeaa)DE-He213 Redox Reac Tions (dpeaa)DE-He213 Komova, M. G. verfasserin aut Novikova, S. A. verfasserin aut Pominova, D. V. verfasserin aut Enthalten in Inorganic materials Dordrecht [u.a.] : Springer Science + Business Media B.V, 1996 51(2015), 12 vom: 22. Okt., Seite 1270-1276 (DE-627)334292719 (DE-600)2057339-X 1608-3172 nnns volume:51 year:2015 number:12 day:22 month:10 pages:1270-1276 https://dx.doi.org/10.1134/S0020168515120031 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 35.40 ASE AR 51 2015 12 22 10 1270-1276 |
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10.1134/S0020168515120031 doi (DE-627)SPR013220136 (SPR)S0020168515120031-e DE-627 ger DE-627 rakwb eng 540 600 670 ASE 35.40 bkl Krut’ko, V. A. verfasserin aut Gel combustion synthesis of $ La_{x} %$ Gd_{14–x} %$ B_{6} %$ Ge_{2} %$ O_{34} $ (x = 3 and 4) codoped with $ Yb^{3+} $–$ Er^{3+} $ and $ Yb^{3+} $–$ Tm^{3+} $ active ions 2015 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract This paper reports the gel combustion synthesis of $ La_{x} %$ Gd_{14–x} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (x = 3 and 4) germanate borates codoped with $ Yb^{3+} $–$ Er^{3+} $ and $ Yb^{3+} $–$ Tm^{3+} $ active ions. The synthesized compounds are isostructural with $ Gd_{14} %$ Ge_{2} %$ B_{6} %$ O_{34} $ and crystallize in trigonal symmetry (sp. gr. P$ 3_{1} $). We have determined the unit-cell parameters of the synthesized mixed-cation germanate borates $ La_{3} %$ Gd_{9.74} %$ Yb_{0.84} %$ Tm_{0.42} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (a = b = 9.794 Å, c = 25.7913 Å, V = 2143 $ Å^{3} $) and $ La_{3.16} %$ Gd_{10} %$ Yb_{0.7} %$ Er_{0.14} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (a = b = 9.746 Å, c = 25.7450 Å, V = 2118 $ Å^{3} $) and assessed their thermal stability. The results demonstrate that the $ La_{x} %$ Gd_{14–x} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (x = 3 and 4) germanate borates codoped with $ Yb^{3+} $–$ Tm^{3+} $ and $ Yb^{3+} $–$ Er^{3+} $ active ions melt congruently at T = 1660 and 1700 K and crystallize with undercooling at T = 1620 and 1660 K, respectively. We have obtained an upconversion luminescence spectrum of the $ La_{3.16} %$ Gd_{10} %$ Yb_{0.7} %$ Er_{0.14} %$ Ge_{2} %$ B_{6} %$ O_{34} $ germanate borate. The spectrum shows two bands. The stronger band (in the green region) corresponds to two transitions: 2H11/2 → 4I15/2 (λ = 525 nm) and 4S3/2→ 4I15/2 (λ = 550 nm). The weaker band (in the red region) corresponds to the $ Er^{3+ 4} $F9/2→ 4I15/2 transition. Combustion Synthesis (dpeaa)DE-He213 Rare Earth Cation (dpeaa)DE-He213 Trigonal Symmetry (dpeaa)DE-He213 Orthoborate (dpeaa)DE-He213 Redox Reac Tions (dpeaa)DE-He213 Komova, M. G. verfasserin aut Novikova, S. A. verfasserin aut Pominova, D. V. verfasserin aut Enthalten in Inorganic materials Dordrecht [u.a.] : Springer Science + Business Media B.V, 1996 51(2015), 12 vom: 22. Okt., Seite 1270-1276 (DE-627)334292719 (DE-600)2057339-X 1608-3172 nnns volume:51 year:2015 number:12 day:22 month:10 pages:1270-1276 https://dx.doi.org/10.1134/S0020168515120031 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 35.40 ASE AR 51 2015 12 22 10 1270-1276 |
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10.1134/S0020168515120031 doi (DE-627)SPR013220136 (SPR)S0020168515120031-e DE-627 ger DE-627 rakwb eng 540 600 670 ASE 35.40 bkl Krut’ko, V. A. verfasserin aut Gel combustion synthesis of $ La_{x} %$ Gd_{14–x} %$ B_{6} %$ Ge_{2} %$ O_{34} $ (x = 3 and 4) codoped with $ Yb^{3+} $–$ Er^{3+} $ and $ Yb^{3+} $–$ Tm^{3+} $ active ions 2015 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract This paper reports the gel combustion synthesis of $ La_{x} %$ Gd_{14–x} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (x = 3 and 4) germanate borates codoped with $ Yb^{3+} $–$ Er^{3+} $ and $ Yb^{3+} $–$ Tm^{3+} $ active ions. The synthesized compounds are isostructural with $ Gd_{14} %$ Ge_{2} %$ B_{6} %$ O_{34} $ and crystallize in trigonal symmetry (sp. gr. P$ 3_{1} $). We have determined the unit-cell parameters of the synthesized mixed-cation germanate borates $ La_{3} %$ Gd_{9.74} %$ Yb_{0.84} %$ Tm_{0.42} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (a = b = 9.794 Å, c = 25.7913 Å, V = 2143 $ Å^{3} $) and $ La_{3.16} %$ Gd_{10} %$ Yb_{0.7} %$ Er_{0.14} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (a = b = 9.746 Å, c = 25.7450 Å, V = 2118 $ Å^{3} $) and assessed their thermal stability. The results demonstrate that the $ La_{x} %$ Gd_{14–x} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (x = 3 and 4) germanate borates codoped with $ Yb^{3+} $–$ Tm^{3+} $ and $ Yb^{3+} $–$ Er^{3+} $ active ions melt congruently at T = 1660 and 1700 K and crystallize with undercooling at T = 1620 and 1660 K, respectively. We have obtained an upconversion luminescence spectrum of the $ La_{3.16} %$ Gd_{10} %$ Yb_{0.7} %$ Er_{0.14} %$ Ge_{2} %$ B_{6} %$ O_{34} $ germanate borate. The spectrum shows two bands. The stronger band (in the green region) corresponds to two transitions: 2H11/2 → 4I15/2 (λ = 525 nm) and 4S3/2→ 4I15/2 (λ = 550 nm). The weaker band (in the red region) corresponds to the $ Er^{3+ 4} $F9/2→ 4I15/2 transition. Combustion Synthesis (dpeaa)DE-He213 Rare Earth Cation (dpeaa)DE-He213 Trigonal Symmetry (dpeaa)DE-He213 Orthoborate (dpeaa)DE-He213 Redox Reac Tions (dpeaa)DE-He213 Komova, M. G. verfasserin aut Novikova, S. A. verfasserin aut Pominova, D. V. verfasserin aut Enthalten in Inorganic materials Dordrecht [u.a.] : Springer Science + Business Media B.V, 1996 51(2015), 12 vom: 22. Okt., Seite 1270-1276 (DE-627)334292719 (DE-600)2057339-X 1608-3172 nnns volume:51 year:2015 number:12 day:22 month:10 pages:1270-1276 https://dx.doi.org/10.1134/S0020168515120031 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 35.40 ASE AR 51 2015 12 22 10 1270-1276 |
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10.1134/S0020168515120031 doi (DE-627)SPR013220136 (SPR)S0020168515120031-e DE-627 ger DE-627 rakwb eng 540 600 670 ASE 35.40 bkl Krut’ko, V. A. verfasserin aut Gel combustion synthesis of $ La_{x} %$ Gd_{14–x} %$ B_{6} %$ Ge_{2} %$ O_{34} $ (x = 3 and 4) codoped with $ Yb^{3+} $–$ Er^{3+} $ and $ Yb^{3+} $–$ Tm^{3+} $ active ions 2015 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier Abstract This paper reports the gel combustion synthesis of $ La_{x} %$ Gd_{14–x} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (x = 3 and 4) germanate borates codoped with $ Yb^{3+} $–$ Er^{3+} $ and $ Yb^{3+} $–$ Tm^{3+} $ active ions. The synthesized compounds are isostructural with $ Gd_{14} %$ Ge_{2} %$ B_{6} %$ O_{34} $ and crystallize in trigonal symmetry (sp. gr. P$ 3_{1} $). We have determined the unit-cell parameters of the synthesized mixed-cation germanate borates $ La_{3} %$ Gd_{9.74} %$ Yb_{0.84} %$ Tm_{0.42} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (a = b = 9.794 Å, c = 25.7913 Å, V = 2143 $ Å^{3} $) and $ La_{3.16} %$ Gd_{10} %$ Yb_{0.7} %$ Er_{0.14} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (a = b = 9.746 Å, c = 25.7450 Å, V = 2118 $ Å^{3} $) and assessed their thermal stability. The results demonstrate that the $ La_{x} %$ Gd_{14–x} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (x = 3 and 4) germanate borates codoped with $ Yb^{3+} $–$ Tm^{3+} $ and $ Yb^{3+} $–$ Er^{3+} $ active ions melt congruently at T = 1660 and 1700 K and crystallize with undercooling at T = 1620 and 1660 K, respectively. We have obtained an upconversion luminescence spectrum of the $ La_{3.16} %$ Gd_{10} %$ Yb_{0.7} %$ Er_{0.14} %$ Ge_{2} %$ B_{6} %$ O_{34} $ germanate borate. The spectrum shows two bands. The stronger band (in the green region) corresponds to two transitions: 2H11/2 → 4I15/2 (λ = 525 nm) and 4S3/2→ 4I15/2 (λ = 550 nm). The weaker band (in the red region) corresponds to the $ Er^{3+ 4} $F9/2→ 4I15/2 transition. Combustion Synthesis (dpeaa)DE-He213 Rare Earth Cation (dpeaa)DE-He213 Trigonal Symmetry (dpeaa)DE-He213 Orthoborate (dpeaa)DE-He213 Redox Reac Tions (dpeaa)DE-He213 Komova, M. G. verfasserin aut Novikova, S. A. verfasserin aut Pominova, D. V. verfasserin aut Enthalten in Inorganic materials Dordrecht [u.a.] : Springer Science + Business Media B.V, 1996 51(2015), 12 vom: 22. Okt., Seite 1270-1276 (DE-627)334292719 (DE-600)2057339-X 1608-3172 nnns volume:51 year:2015 number:12 day:22 month:10 pages:1270-1276 https://dx.doi.org/10.1134/S0020168515120031 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2056 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4393 GBV_ILN_4700 35.40 ASE AR 51 2015 12 22 10 1270-1276 |
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Combustion Synthesis Rare Earth Cation Trigonal Symmetry Orthoborate Redox Reac Tions |
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Krut’ko, V. A. @@aut@@ Komova, M. G. @@aut@@ Novikova, S. A. @@aut@@ Pominova, D. V. @@aut@@ |
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A.</subfield><subfield code="e">verfasserin</subfield><subfield code="4">aut</subfield></datafield><datafield tag="245" ind1="1" ind2="0"><subfield code="a">Gel combustion synthesis of $ La_{x} %$ Gd_{14–x} %$ B_{6} %$ Ge_{2} %$ O_{34} $ (x = 3 and 4) codoped with $ Yb^{3+} $–$ Er^{3+} $ and $ Yb^{3+} $–$ Tm^{3+} $ active ions</subfield></datafield><datafield tag="264" ind1=" " ind2="1"><subfield code="c">2015</subfield></datafield><datafield tag="336" ind1=" " ind2=" "><subfield code="a">Text</subfield><subfield code="b">txt</subfield><subfield code="2">rdacontent</subfield></datafield><datafield tag="337" ind1=" " ind2=" "><subfield code="a">Computermedien</subfield><subfield code="b">c</subfield><subfield code="2">rdamedia</subfield></datafield><datafield tag="338" ind1=" " ind2=" "><subfield code="a">Online-Ressource</subfield><subfield code="b">cr</subfield><subfield code="2">rdacarrier</subfield></datafield><datafield tag="520" ind1=" " ind2=" "><subfield code="a">Abstract This paper reports the gel combustion synthesis of $ La_{x} %$ Gd_{14–x} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (x = 3 and 4) germanate borates codoped with $ Yb^{3+} $–$ Er^{3+} $ and $ Yb^{3+} $–$ Tm^{3+} $ active ions. The synthesized compounds are isostructural with $ Gd_{14} %$ Ge_{2} %$ B_{6} %$ O_{34} $ and crystallize in trigonal symmetry (sp. gr. P$ 3_{1} $). We have determined the unit-cell parameters of the synthesized mixed-cation germanate borates $ La_{3} %$ Gd_{9.74} %$ Yb_{0.84} %$ Tm_{0.42} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (a = b = 9.794 Å, c = 25.7913 Å, V = 2143 $ Å^{3} $) and $ La_{3.16} %$ Gd_{10} %$ Yb_{0.7} %$ Er_{0.14} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (a = b = 9.746 Å, c = 25.7450 Å, V = 2118 $ Å^{3} $) and assessed their thermal stability. The results demonstrate that the $ La_{x} %$ Gd_{14–x} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (x = 3 and 4) germanate borates codoped with $ Yb^{3+} $–$ Tm^{3+} $ and $ Yb^{3+} $–$ Er^{3+} $ active ions melt congruently at T = 1660 and 1700 K and crystallize with undercooling at T = 1620 and 1660 K, respectively. We have obtained an upconversion luminescence spectrum of the $ La_{3.16} %$ Gd_{10} %$ Yb_{0.7} %$ Er_{0.14} %$ Ge_{2} %$ B_{6} %$ O_{34} $ germanate borate. The spectrum shows two bands. The stronger band (in the green region) corresponds to two transitions: 2H11/2 → 4I15/2 (λ = 525 nm) and 4S3/2→ 4I15/2 (λ = 550 nm). The weaker band (in the red region) corresponds to the $ Er^{3+ 4} $F9/2→ 4I15/2 transition.</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Combustion Synthesis</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Rare Earth Cation</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Trigonal Symmetry</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Orthoborate</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="650" ind1=" " ind2="4"><subfield code="a">Redox Reac Tions</subfield><subfield code="7">(dpeaa)DE-He213</subfield></datafield><datafield tag="700" ind1="1" ind2=" "><subfield code="a">Komova, M. 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Krut’ko, V. A. |
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Krut’ko, V. A. ddc 540 bkl 35.40 misc Combustion Synthesis misc Rare Earth Cation misc Trigonal Symmetry misc Orthoborate misc Redox Reac Tions Gel combustion synthesis of $ La_{x} %$ Gd_{14–x} %$ B_{6} %$ Ge_{2} %$ O_{34} $ (x = 3 and 4) codoped with $ Yb^{3+} $–$ Er^{3+} $ and $ Yb^{3+} $–$ Tm^{3+} $ active ions |
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540 600 670 ASE 35.40 bkl Gel combustion synthesis of $ La_{x} %$ Gd_{14–x} %$ B_{6} %$ Ge_{2} %$ O_{34} $ (x = 3 and 4) codoped with $ Yb^{3+} $–$ Er^{3+} $ and $ Yb^{3+} $–$ Tm^{3+} $ active ions Combustion Synthesis (dpeaa)DE-He213 Rare Earth Cation (dpeaa)DE-He213 Trigonal Symmetry (dpeaa)DE-He213 Orthoborate (dpeaa)DE-He213 Redox Reac Tions (dpeaa)DE-He213 |
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ddc 540 bkl 35.40 misc Combustion Synthesis misc Rare Earth Cation misc Trigonal Symmetry misc Orthoborate misc Redox Reac Tions |
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| title |
Gel combustion synthesis of $ La_{x} %$ Gd_{14–x} %$ B_{6} %$ Ge_{2} %$ O_{34} $ (x = 3 and 4) codoped with $ Yb^{3+} $–$ Er^{3+} $ and $ Yb^{3+} $–$ Tm^{3+} $ active ions |
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| title_full |
Gel combustion synthesis of $ La_{x} %$ Gd_{14–x} %$ B_{6} %$ Ge_{2} %$ O_{34} $ (x = 3 and 4) codoped with $ Yb^{3+} $–$ Er^{3+} $ and $ Yb^{3+} $–$ Tm^{3+} $ active ions |
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Krut’ko, V. A. Komova, M. G. Novikova, S. A. Pominova, D. V. |
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540 600 670 ASE 35.40 bkl |
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Elektronische Aufsätze |
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Krut’ko, V. A. |
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10.1134/S0020168515120031 |
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540 600 670 |
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verfasserin |
| title_sort |
gel combustion synthesis of $ la_{x} %$ gd_{14–x} %$ b_{6} %$ ge_{2} %$ o_{34} $ (x = 3 and 4) codoped with $ yb^{3+} $–$ er^{3+} $ and $ yb^{3+} $–$ tm^{3+} $ active ions |
| title_auth |
Gel combustion synthesis of $ La_{x} %$ Gd_{14–x} %$ B_{6} %$ Ge_{2} %$ O_{34} $ (x = 3 and 4) codoped with $ Yb^{3+} $–$ Er^{3+} $ and $ Yb^{3+} $–$ Tm^{3+} $ active ions |
| abstract |
Abstract This paper reports the gel combustion synthesis of $ La_{x} %$ Gd_{14–x} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (x = 3 and 4) germanate borates codoped with $ Yb^{3+} $–$ Er^{3+} $ and $ Yb^{3+} $–$ Tm^{3+} $ active ions. The synthesized compounds are isostructural with $ Gd_{14} %$ Ge_{2} %$ B_{6} %$ O_{34} $ and crystallize in trigonal symmetry (sp. gr. P$ 3_{1} $). We have determined the unit-cell parameters of the synthesized mixed-cation germanate borates $ La_{3} %$ Gd_{9.74} %$ Yb_{0.84} %$ Tm_{0.42} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (a = b = 9.794 Å, c = 25.7913 Å, V = 2143 $ Å^{3} $) and $ La_{3.16} %$ Gd_{10} %$ Yb_{0.7} %$ Er_{0.14} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (a = b = 9.746 Å, c = 25.7450 Å, V = 2118 $ Å^{3} $) and assessed their thermal stability. The results demonstrate that the $ La_{x} %$ Gd_{14–x} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (x = 3 and 4) germanate borates codoped with $ Yb^{3+} $–$ Tm^{3+} $ and $ Yb^{3+} $–$ Er^{3+} $ active ions melt congruently at T = 1660 and 1700 K and crystallize with undercooling at T = 1620 and 1660 K, respectively. We have obtained an upconversion luminescence spectrum of the $ La_{3.16} %$ Gd_{10} %$ Yb_{0.7} %$ Er_{0.14} %$ Ge_{2} %$ B_{6} %$ O_{34} $ germanate borate. The spectrum shows two bands. The stronger band (in the green region) corresponds to two transitions: 2H11/2 → 4I15/2 (λ = 525 nm) and 4S3/2→ 4I15/2 (λ = 550 nm). The weaker band (in the red region) corresponds to the $ Er^{3+ 4} $F9/2→ 4I15/2 transition. |
| abstractGer |
Abstract This paper reports the gel combustion synthesis of $ La_{x} %$ Gd_{14–x} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (x = 3 and 4) germanate borates codoped with $ Yb^{3+} $–$ Er^{3+} $ and $ Yb^{3+} $–$ Tm^{3+} $ active ions. The synthesized compounds are isostructural with $ Gd_{14} %$ Ge_{2} %$ B_{6} %$ O_{34} $ and crystallize in trigonal symmetry (sp. gr. P$ 3_{1} $). We have determined the unit-cell parameters of the synthesized mixed-cation germanate borates $ La_{3} %$ Gd_{9.74} %$ Yb_{0.84} %$ Tm_{0.42} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (a = b = 9.794 Å, c = 25.7913 Å, V = 2143 $ Å^{3} $) and $ La_{3.16} %$ Gd_{10} %$ Yb_{0.7} %$ Er_{0.14} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (a = b = 9.746 Å, c = 25.7450 Å, V = 2118 $ Å^{3} $) and assessed their thermal stability. The results demonstrate that the $ La_{x} %$ Gd_{14–x} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (x = 3 and 4) germanate borates codoped with $ Yb^{3+} $–$ Tm^{3+} $ and $ Yb^{3+} $–$ Er^{3+} $ active ions melt congruently at T = 1660 and 1700 K and crystallize with undercooling at T = 1620 and 1660 K, respectively. We have obtained an upconversion luminescence spectrum of the $ La_{3.16} %$ Gd_{10} %$ Yb_{0.7} %$ Er_{0.14} %$ Ge_{2} %$ B_{6} %$ O_{34} $ germanate borate. The spectrum shows two bands. The stronger band (in the green region) corresponds to two transitions: 2H11/2 → 4I15/2 (λ = 525 nm) and 4S3/2→ 4I15/2 (λ = 550 nm). The weaker band (in the red region) corresponds to the $ Er^{3+ 4} $F9/2→ 4I15/2 transition. |
| abstract_unstemmed |
Abstract This paper reports the gel combustion synthesis of $ La_{x} %$ Gd_{14–x} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (x = 3 and 4) germanate borates codoped with $ Yb^{3+} $–$ Er^{3+} $ and $ Yb^{3+} $–$ Tm^{3+} $ active ions. The synthesized compounds are isostructural with $ Gd_{14} %$ Ge_{2} %$ B_{6} %$ O_{34} $ and crystallize in trigonal symmetry (sp. gr. P$ 3_{1} $). We have determined the unit-cell parameters of the synthesized mixed-cation germanate borates $ La_{3} %$ Gd_{9.74} %$ Yb_{0.84} %$ Tm_{0.42} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (a = b = 9.794 Å, c = 25.7913 Å, V = 2143 $ Å^{3} $) and $ La_{3.16} %$ Gd_{10} %$ Yb_{0.7} %$ Er_{0.14} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (a = b = 9.746 Å, c = 25.7450 Å, V = 2118 $ Å^{3} $) and assessed their thermal stability. The results demonstrate that the $ La_{x} %$ Gd_{14–x} %$ Ge_{2} %$ B_{6} %$ O_{34} $ (x = 3 and 4) germanate borates codoped with $ Yb^{3+} $–$ Tm^{3+} $ and $ Yb^{3+} $–$ Er^{3+} $ active ions melt congruently at T = 1660 and 1700 K and crystallize with undercooling at T = 1620 and 1660 K, respectively. We have obtained an upconversion luminescence spectrum of the $ La_{3.16} %$ Gd_{10} %$ Yb_{0.7} %$ Er_{0.14} %$ Ge_{2} %$ B_{6} %$ O_{34} $ germanate borate. The spectrum shows two bands. The stronger band (in the green region) corresponds to two transitions: 2H11/2 → 4I15/2 (λ = 525 nm) and 4S3/2→ 4I15/2 (λ = 550 nm). The weaker band (in the red region) corresponds to the $ Er^{3+ 4} $F9/2→ 4I15/2 transition. |
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12 |
| title_short |
Gel combustion synthesis of $ La_{x} %$ Gd_{14–x} %$ B_{6} %$ Ge_{2} %$ O_{34} $ (x = 3 and 4) codoped with $ Yb^{3+} $–$ Er^{3+} $ and $ Yb^{3+} $–$ Tm^{3+} $ active ions |
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https://dx.doi.org/10.1134/S0020168515120031 |
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Komova, M. G. Novikova, S. A. Pominova, D. V. |
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Komova, M. G. Novikova, S. A. Pominova, D. V. |
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10.1134/S0020168515120031 |
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2024-07-03T18:13:08.012Z |
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| score |
7.4025593 |