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Rare earth ion doped germanate eutectic material and preparation method thereof

A technology of rare earth ions and eutectic materials, applied in polycrystalline material growth, chemical instruments and methods, single crystal growth, etc., can solve problems such as no reports

Active Publication Date: 2019-10-15
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, rare earth ion-doped bismuthate (BGO) eutectic materials have not been reported

Method used

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  • Rare earth ion doped germanate eutectic material and preparation method thereof

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Embodiment 1

[0032] A preparation method of rare earth ion doped silicate eutectic material, such as figure 1 shown, including the following steps:

[0033] (1) Weighing of powder raw materials; according to Bi 2 o 3 -GeO 2 Binary phase diagram, Bi 2 o 3 The mole percentage is 20%, GeO 2 The molar percentage is 80%. Doped with rare earth ions Nd 3+ with Bi 3+ The ion molar ratio is Nd:Bi=0.003:1. Bi with a purity of 5N 2 o 3 、GeO 2 and Nd 2 o 3 Weigh 10g of the powder according to the above molar ratio, and fully grind for 40 minutes to mix the raw materials evenly.

[0034] (2) Put the ground raw material into a plastic balloon with a diameter of 5 mm, then press it with a hydraulic press at 15 MPa for 10 minutes to form a rod shape, and then sinter at 750 ° C for 12 hours to form a polycrystalline raw material;

[0035] (3) The polycrystalline raw material is loaded into a Pt crucible 4 with a micropore diameter of 2 mm / 1 mm, and the BSO seed crystal 8 is placed on the see...

Embodiment 2

[0039] A preparation method of a rare earth ion-doped silicate eutectic material comprises the following steps:

[0040] (1) Weighing of powder raw materials; according to Bi 2 o 3 -GeO 2 Binary phase diagram, Bi 2 o 3 The mole percentage is 20%, GeO 2 The molar percentage is 80%. doped rare earth ion Yb 3+ with Bi 3+ The ion molar ratio is Yb:Bi=0.005:1. Bi with a purity of 5N 2 o 3 、GeO 2 and Yb 2 o 3 Weigh 10g of the powder according to the above molar ratio, and grind it sufficiently to mix the raw materials evenly.

[0041] (2) Put the ground raw material into a plastic balloon with a diameter of 5 mm, then press it with a hydraulic press at 15 MPa for 10 minutes to form a rod shape, and then sinter at 750 ° C for 12 hours to form a polycrystalline raw material;

[0042] (3) The polycrystalline raw material is loaded into a Pt crucible 4 with a micropore diameter of 2mm / 1mm, and the BSO seed crystal 8 is placed on the seed rod 9 and fixed with screws, and the ...

Embodiment 3

[0046] A preparation method of a rare earth ion-doped germanate eutectic material comprises the following steps:

[0047] (1) Weighing of powder raw materials; according to Bi 2 o 3 -GeO 2 Binary phase diagram, Bi 2 o 3 The mole percentage is 20%, GeO 2 The molar percentage is 80%. Doped with rare earth ions Pr 3+ with Bi 3+ The ion molar ratio is Pr:Bi=0.006:1. Bi with a purity of 5N 2 o 3 、GeO 2 and Pr 6 o 11 Weigh 10g of the powder according to the above molar ratio, and grind it sufficiently to mix the raw materials evenly.

[0048] (2) Put the ground raw material into a plastic balloon with a diameter of 5 mm, then press it with a hydraulic press at 15 MPa for 10 minutes to form a rod shape, and then sinter at 750 ° C for 12 hours to form a polycrystalline raw material;

[0049] (3) The polycrystalline raw material is loaded into a Pt crucible 4 with a micropore diameter of 2mm / 1mm, and the BSO seed crystal 8 is placed on the seed rod 9 and fixed with screws...

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Abstract

The invention relates to a rare earth ion doped germanate eutectic material and a preparation method thereof. The chemical formula of the eutectic material is Re4xBi4 (1-x) Ge3O12 / GeO2, wherein x ranges from 0.003 to 0.07, and Re is one or more of Nd, Yb, Tm, Ho, Er, Pr, Dy or Sm rare earth ions. The preparation method of the material is mainly a micro-pulling-down method, and comprises the following steps: (1) preparing raw materials in proportion, and grinding raw materials; (2) placing the ground raw materials into a Pt crucible; (3) loading the Pt crucible into a furnace for heating and melting the material; (4) setting a crystal growing program to grow crystals; and (5) cooling and taking out the crystals. Compared with the prior art, the rare earth ion doped germanate eutectic material has the advantages that due to the fact that two kinds of crystal grains exist in the eutectic material, the luminescent zone ratio of the rare earth ions is wider in a single crystal material, andthe eutectic material can be used for tunable laser output.

Description

technical field [0001] The invention relates to the technical field of functional materials, in particular to a rare earth ion-doped germanate eutectic material and a preparation method thereof. Background technique [0002] With the development of the information age, people are paying more and more attention to lasers in special bands, prompting scholars from all over the world to shift their research focus to high-quality lasers in new bands, such as the visible light band and the mid-infrared band with longer wavelengths. Today, GaN blue light diodes can already provide watt-level output power near the 390nm band. InGaN diodes can emit laser light from near ultraviolet light to blue light in the 360-470nm band. [0003] Trivalent Pr 3+ It is a dopant ion that is widely used to directly emit visible light laser. At 445nm, 468nm and 486nm, Pr 3+ The absorption cross section can reach 10 -19 cm 2 magnitude, its upper energy level 3 P 0 The fluorescence lifetime is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/32C30B15/08C30B15/20
CPCC30B15/08C30B15/20C30B29/32
Inventor 李纳王庆国唐慧丽吴锋罗平徐军
Owner TONGJI UNIV