Rare earth mixed transparent oxyfluoride glass ceramic and preparation process thereof

A rare earth doped and oxyfluoride technology is applied in the field of rare earth doped transparent oxyfluoride glass ceramics and its preparation, and achieves the effect of stable chemical properties

Inactive Publication Date: 2005-11-09
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the late nineties of last century, M.J.Dejneka ("The Luminescence and Structure of NovelTransparent Oxyfluoride Glass-ceramics", J.Non-Cryst.Solids 239 (1998) 149) reported the same as the aforementioned Pb-containing x CD 1-x f 2 Nanocrystalline phase of oxyfluori

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example 1:

[0021] According to composition 47.6SiO 2 -19Al 2 O 3 -28.6CaF 2 -4.8ErF 3 Weigh high-purity rare earth fluoride ErF 3 , SiO 2 , Al 2 O 3 And CaF 2 After mixing the above-mentioned raw materials uniformly, put them in a high-purity corundum crucible or platinum crucible, and put them in a furnace heated to 1400℃ to melt the raw materials into a liquid state, and make the melt uniform, and the melt is kept at a constant temperature for 1 hour After that, the crucible was quickly taken out from the high-temperature furnace, and the melt in the crucible was quickly poured onto the mold to form a glass sample. The glass contains CaF after nucleation heat treatment at 600°C for 0.5 hours and crystallization heat treatment at 660°C for 2 hours. 2 Nanocrystalline glass ceramics. Under the pumping of 980nm LD laser, a strong and wide emission band can be generated near 1537nm. The half-height width of this strong and wide emission band is about 75nm (the erbium-doped Z...

Example Embodiment

[0022] Example 2:

[0023] According to composition 47.4SiO 2 -19Al 2 O 3 -28.4CaF 2 -4.7YbF 3 -0.5ErF 3 Weigh high-purity rare earth fluoride ErF 3 , YbF 3 , SiO 2 , Al 2 O 3 And CaF 2 After mixing the above-mentioned raw materials uniformly, put them in a high-purity corundum crucible or platinum crucible, and put them in a furnace heated to 1400℃ to melt the raw materials into a liquid state, and make the melt uniform, and the melt is kept at a constant temperature for 1 hour After that, the crucible was quickly taken out from the high-temperature furnace, and the melt in the crucible was quickly poured onto the mold to form a glass sample. The glass contains CaF after nucleation heat treatment at 600°C for 0.5 hours and crystallization heat treatment at 660°C for 2 hours. 2 Nanocrystalline glass ceramics. The present invention Er 3+ / Yb 3+ Co-doped glass ceramics, due to co-doping Yb 3+ As a sensitizer, it can more effectively convert invisible near-infrared light into visible...

Example Embodiment

[0024] Example 3:

[0025] According to composition 47.6SiO 2 -9.5Al 2 O 3 -19ZnF 2 -19.1SrF 2 -4.8ErF 3 Weigh high-purity rare earth fluoride ErF 3 , SiO 2 , Al 2 O 3 , ZnF 2 And SrF 2 After mixing the above-mentioned raw materials uniformly, put them in a high-purity corundum crucible or platinum crucible, and put them in a furnace heated to 1400℃ to melt the raw materials into a liquid state, and make the melt uniform, and the melt is kept at a constant temperature for 1 hour After that, the crucible was quickly taken out from the high-temperature furnace, and the melt in the crucible was quickly poured onto the mold to form a glass sample. SrF can be obtained after nucleation heat treatment at 600°C for 0.5 hours and crystallization heat treatment at 630°C for 1 hour. 2Nanocrystalline glass ceramics. The glass ceramic can effectively convert infrared light into visible green light and red light under the 980nm LD laser pump, and the effective half-height width of the infrared ...

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Abstract

A transparent glass ceramics of RE-doped oxyfluoride is proportionally prepared from SiO2, Al2O3, EnF2, MF2 and ReF3, where M is 2-valence alkali-earth metal ion chosen from Mg, Ca, Sr, and Ba and Re is 3-valence RE ion chosen from La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, through high fusing and heat treating. It can be extensive used in laser, luminous and optical communication field.

Description

technical field [0001] The invention relates to rare earth-doped transparent oxyfluoride glass ceramics and a preparation method thereof. Background technique [0002] Rare earth ion-doped oxyfluoride glass-ceramics have attracted widespread attention for their potential applications in laser fibers, fiber amplifiers, and upconversion luminescence. By heat treatment of rare earth ion doped oxyfluoride glass, oxyfluoride glass ceramics uniformly distributed with fluoride nanocrystal phases can be obtained, and rare earth ions can be enriched in these fluoride nanocrystals as nucleating agents. Therefore, this kind of material can not only provide a low phonon energy environment of fluoride that is favorable for the luminescence of rare earth ions, but also contain a large amount of oxides in the matrix, and also have mechanical properties and chemical stability comparable to oxide glasses. [0003] As early as the early 1990s, Y.Wang and J.Ohwaki (“New Transparent Vitroceram...

Claims

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Application Information

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IPC IPC(8): C03C10/14
CPCC03C10/00C03C3/23C03C3/325
Inventor 樊先平乔旭升王智宇钱国栋洪樟连邱建荣王民权
Owner ZHEJIANG UNIV
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