Compound tin boron oxybromide, tin boron oxybromide birefringent crystal, and preparation method and application thereof

A technology of birefringent crystals and compounds, used in chemical instruments and methods, boron halide compounds, crystal growth, etc.

Active Publication Date: 2020-08-28
XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Birefringent optical properties: Measured under the same conditions at 546nm, the birefringence of tin boron oxybromide is 0.439, while tin boron oxychloride is 0.168, which is only one-third of that of tin boron oxybromide. The fundamental reason for this performance gain It is caused by the effect of Br, which further shows that although the molecular formulas of the two are similar, it is not a simple replacement. Due to the introduction of Br, the performance has taken off by leaps and bounds

Method used

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  • Compound tin boron oxybromide, tin boron oxybromide birefringent crystal, and preparation method and application thereof
  • Compound tin boron oxybromide, tin boron oxybromide birefringent crystal, and preparation method and application thereof
  • Compound tin boron oxybromide, tin boron oxybromide birefringent crystal, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Preparation compound:

[0058] According to the reaction formula: 2SnBr 2 +3B 2 o 3 →Sn 2 B 5 o 9 Br+BBr 3 , the compound Sn was synthesized by solid phase reaction method 2 B 5 o 9 Br:

[0059] SnBr 2 , B 2 o 3 Mix evenly at a molar ratio of 2:3, put it into a platinum crucible, place it in a muffle furnace, raise the temperature to 450°C under vacuum or an inert atmosphere, and keep the temperature constant for 60 hours to obtain the compound Sn 2 B 5 o 9 Polycrystalline powder of Br.

Embodiment 2

[0061] Preparation compound:

[0062] According to the reaction formula: 2SnBr 2 +5H 3 BO 3 →Sn 2 B 5 o 9 Br+6H 2 O+3HBr, compound Sn was synthesized by solid state reaction 2 B 5 o 9 Br:

[0063] SnBr 2 , H 3 BO 3 Mix evenly at a molar ratio of 2:5, put it into a platinum crucible, place it in a muffle furnace, raise the temperature to 400°C under vacuum or an inert atmosphere, and keep the temperature constant for 100 hours to obtain the compound Sn 2 B 5 o 9 Polycrystalline powder of Br.

Embodiment 3

[0065] Preparation compound:

[0066] According to the reaction formula: SnO+SnBr 2 +2B 2 o 3 +H 3 BO 3 →Sn 2 B 5 o 9 Br+HBr+H 2 O, the compound Sn was synthesized by solid phase reaction 2 B 5 o 9 Br:

[0067] SnO, SnBr 2 , B 2 o 3 , H 3 BO 3 Mix evenly according to the ratio of the reaction formula in Example 3, put it into a platinum crucible, place it in a muffle furnace, raise the temperature to 500°C under vacuum or an inert atmosphere, and keep the temperature constant for 120 hours to obtain the compound Sn 2 B 5 o 9 Polycrystalline powder of Br.

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Abstract

The invention relates to a compound tin boron oxybromide, a tin boron oxybromide birefringent crystal, a preparation method and application. The compound has a chemical formula of Sn2B5O9Br, the molecular weight of the compound is 515.37, and the compound is prepared by adopting a solid-phase synthesis method or a vacuum packaging method. The chemical formula of the crystal is Sn2B5O9Br, the molecular weight of the crystal is 515.37, the crystal belongs to an orthorhombic system, the space group is Pnn2, the cell parameters are as follows: a = 11.398 (4) angstroms, b = 11.446 (4) angstroms, c= 6.553 (2) angstroms, the unit cell volume is 854.9 (5) cubic angstroms, the transmission range is 330-3500nm, and the birefringence is 0.244 (3500nm) to 0.293 (330nm). A melt process, a high-temperature melt method, a vacuum packaging method, a hydrothermal method or a room-temperature solution method are adopted to grow the crystal. The tin boron oxybromide birefringent crystal has relatively large birefringence, has important application in the fields of optics and communication, can be used for manufacturing a polarization beam splitter prism, a phase delay device and an electro-optical modulation device, is used for an infrared-visible-ultraviolet band, and is a biaxial crystal.

Description

technical field [0001] The present invention relates to a kind of compound tin boron oxybromide and tin boron oxybromide birefringent crystal and its preparation method and application, especially a kind of molecular formula for infrared-visible-ultraviolet band is Sn 2 B 5 o 9 Applications of Br tin boron oxybromide birefringent crystals. Background technique [0002] Birefringence refers to the phenomenon that a beam of light is projected onto the surface of a crystal to produce two beams of refracted light. The root cause of this phenomenon is the anisotropy of the crystal material. When light propagates in an optical heterogeneous body (such as a crystal other than the cubic system), except for a few special directions (along the direction of the optical axis), its vibration characteristics will be changed, and it will be decomposed into two electric field vectors whose vibration directions are perpendicular to each other. Two beams of polarized light with different p...

Claims

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Application Information

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IPC IPC(8): C30B29/12C01B35/06C30B1/10C30B7/10C30B9/00C30B11/00C30B15/00C30B17/00G02B1/02G02B5/30
CPCC30B29/12C30B1/10C30B7/10C30B9/00C30B11/00C30B15/00C30B17/00C01B35/061G02B1/02G02B5/3025
Inventor 潘世烈郭靖宇韩树娟于浩海
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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