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A kind of CO2+: kznf3 glass ceramics and its preparation method and application

A technology of glass-ceramics and crystallites, applied in the direction of active medium materials and the like, can solve the problems of difficulty in crystal preparation and high cost, and achieve the effects of low cost, simple preparation and convenient use.

Active Publication Date: 2019-01-18
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The study found that Co 2+ Doped crystals have ultra-broadband luminescence in the infrared band, but crystal preparation is difficult and costly

Method used

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  • A kind of CO2+: kznf3 glass ceramics and its preparation method and application
  • A kind of CO2+: kznf3 glass ceramics and its preparation method and application
  • A kind of CO2+: kznf3 glass ceramics and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Co prepared in this example 2+ :KZnF 3 Glass-ceramics whose composition is KF-ZnF 2 -SiO 2 -CoO, the molar percentages of each raw material are: 25% KF, 25% ZnF 2 , 50% SiO 2 , 0.1% CoO. Weigh each raw material separately, place it in an agate mortar, grind and stir to make it evenly mixed, and transfer the powder sample into an alumina crucible. Melt in a high-temperature box-type resistance furnace at 1450°C for 20 minutes, and then pour the glass melt onto a smooth copper plate to form a glass block. Cut the glass block into regular glass flakes, keep them warm in a muffle furnace at 500 °C for 20 hours, and then cool to room temperature with the furnace to obtain transparent Co 2+ :KZnF 3 Glass-ceramic.

[0033] Co prepared in this example 2+ :KZnF 3 The X-ray diffraction pattern of glass-ceramic is as figure 1 As shown, it can be seen from the figure that the Co 2 + :KZnF 3 Crystals precipitated from glass-ceramics and KZnF 3 The standard PDF card PD...

Embodiment 2

[0035] Co prepared in this example 2+ :KZnF 3 Glass-ceramics whose composition is KF-ZnF 2 -Al 2 o 3 -SiO 2 -CoO, the molar percentages of each raw material are: 22.5% KF, 22.5% ZnF 2 , 5% Al 2 o 3 , 50% SiO 2 , 0.1% CoO. Weigh each raw material separately, place it in an agate mortar, grind and stir to make it evenly mixed, and transfer the powder sample into an alumina crucible. Melt in a high-temperature box-type resistance furnace at 1500°C for 20 minutes, and then pour the glass melt onto a smooth copper plate to form a glass block. Cut the glass block into regular glass flakes, keep them warm in a muffle furnace at 520°C for 15 hours, and then cool to room temperature with the furnace to obtain transparent Co 2 + :KZnF 3 Glass-ceramic has broadband luminescence in the near and mid-infrared, and the luminescence peak is at 1810nm.

Embodiment 3

[0037] Co prepared in this example 2+ :KZnF 3 Glass-ceramics whose composition is KF-ZnF 2 -Al 2 o 3 -SiO 2 -CoO, the molar percentages of each raw material are: 20% KF, 20% ZnF 2 , 5%Al 2 o 3 , 55% SiO 2, 0.2% CoO. Weigh each raw material separately, place it in an agate mortar, grind and stir to make it evenly mixed, and transfer the powder sample into an alumina crucible. Melt in a high-temperature box-type resistance furnace at 1550°C for 20 minutes, and then pour the glass melt onto a smooth copper plate to form a glass block. Cut the glass block into regular glass flakes, keep them warm in a muffle furnace at 530 °C for 10 hours, and then cool to room temperature with the furnace to obtain transparent Co 2+ :KZnF 3 Glass-ceramic has broadband luminescence in the near and mid-infrared, and the luminescence peak is at 1850nm.

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Abstract

The invention discloses a CO2 +: KZnF3 glass ceramics with Co2+:KZnF3 as the microcrystalline phase; the CO2+:KZnF3 is composed of KF, ZnF2, Al2O3, SiO2, and CoO, wherein the mol percentage of each component is respectively 20-30% KF, 20-30% ZnF2, 0-10% Al2O3, 0.1-0.3% CoO, and the rest is SiO2. The invention further discloses a preparing method thereof. The Co2 +:KZnF3 glass ceramics provided in this invention have the near-infrared luminescence properties, the luminous range is 1,400-2,400nm, and the luminous peak is at 1,800-1,850nm. The Co2+:KZnF3 glass ceramics can be used as a near-infrared laser gain medium.

Description

technical field [0001] The present invention relates to glass ceramics, in particular to a Co 2+ :KZnF 3 Glass-ceramic and its preparation method and application. Background technique [0002] Studies have found that infrared lasers have strong penetrating power and are not easily affected by weather. They can be widely used in laser ranging, laser communication, laser radar and other fields. Therefore, the development of infrared lasers has important practical significance. Solid-state lasers refer to lasers that use metal ion doped materials as the laser gain medium. They have the advantages of small size and high output peak power, and are widely used, and their core part is the laser gain medium. At present, laser gain media in the infrared band mainly include rare earth ion doped gain materials, transition metal ion doped gain materials, and the like. The 3d orbital of the transition metal ion is in the outermost layer, and the d-d electronic transition is greatly af...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/16C03B32/02C03C4/00H01S3/16
CPCC03B32/02C03C4/0071C03C10/16H01S3/16
Inventor 周时凤林丽婷毛倩楠于泳泽陈杰杰罗浩邱建荣
Owner SOUTH CHINA UNIV OF TECH