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A kind of rare earth ion doped silicate eutectic material and preparation method thereof

A technology of eutectic materials and rare earth ions, which can be used in the growth of polycrystalline materials, chemical instruments and methods, single crystal growth, etc., and can solve problems such as few reports.

Active Publication Date: 2021-09-03
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 silicate (BSO) eutectic materials are rarely reported

Method used

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  • A kind of rare earth ion doped silicate eutectic material and preparation method thereof
  • A kind of rare earth ion doped silicate eutectic material and preparation method thereof

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Embodiment 1

[0033] A preparation method of rare earth ion doped silicate eutectic material, such as figure 1 shown, including the following steps:

[0034] (1) Weighing of powder raw materials; according to Bi 2 o 3 -SiO 2 Binary phase diagrams, such as figure 2 As shown, Bi 2 o 3 The mole percentage is 75%, SiO 2 The molar percentage is 25%. 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 , SiO 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.

[0035] (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;

[0036] (3) The polycrystalline raw material is loaded into a Pt crucible 4 with a micropore diameter of 2mm / 1mm, and the BSO seed c...

Embodiment 2

[0040] A preparation method of a rare earth ion-doped silicate eutectic material comprises the following steps:

[0041] (1) Weighing of powder raw materials; according to Bi 2 o 3 -SiO 2 Binary phase diagram, Bi 2 o 3 The mole percentage is 75%, SiO 2 The molar percentage is 25%. 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 , SiO 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.

[0042] (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;

[0043] (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 t...

Embodiment 3

[0047] A preparation method of a rare earth ion-doped germanate eutectic material comprises the following steps:

[0048] (1) Weighing of powder raw materials; according to Bi 2 o 3 -SiO 2 Binary phase diagram, Bi 2 o 3 The mole percentage is 75%, SiO 2 The molar percentage is 25%. 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 , SiO 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.

[0049] (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;

[0050] (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 screw...

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Abstract

The invention relates to a rare earth ion-doped silicate eutectic material and a preparation method thereof. The chemical formula of the rare earth eutectic material is Re 4x Bi 4(1‑x) Si 3 O 12 / Bi 12 SiO 20 , where Re is a rare earth ion such as Nd, Yb, Tm, Ho, Er, Pr, Dy, Sm, etc., x is in the range of 0.003‑0.07, Bi 2 O 3 The mass fraction of 75% SiO 2 The quality score is 25%. The preparation method of the material is mainly a micro-draw down method, which includes the following steps: (1) preparing raw materials according to the proportion and grinding the raw materials; (2) loading the ground raw materials into a Pt crucible; (3) loading the Pt crucible into a furnace (4) Set the crystal growth program to grow crystals; (5) Cool down and take out the crystals. Compared with the prior art, the eutectic material of the present invention has two sizes of crystal grains inside the material, so the emission half-width ratio of rare earth ions is wider in the single crystal material, which 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 silicate 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 ab...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/34C30B15/08C30B15/20
CPCC30B15/08C30B15/20C30B29/34
Inventor 李纳王庆国吴锋唐慧丽罗平徐军
Owner TONGJI UNIV