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Compound of barium, bismuth, boron and oxygen, optical crystal of compound of barium, bismuth, boron and oxygen and preparation method and application thereof

A barium bismuth boron oxide, optical crystal technology, applied in chemical instruments and methods, boron oxide compounds, crystal growth, etc., can solve the problems of crystal quality decline, iridium element price change, difficult to obtain high-quality crystals, etc.

Active Publication Date: 2012-07-18
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

YVO 4 It is an artificial birefringent crystal with good performance, but due to the YVO 4 The melting point is high, and the iridium crucible must be used for well-lifting growth, and the growth atmosphere is a weak oxygen atmosphere, so there is a problem of price change of iridium element during growth, which reduces the quality of the crystal and makes it difficult to obtain high-quality crystals

Method used

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  • Compound of barium, bismuth, boron and oxygen, optical crystal of compound of barium, bismuth, boron and oxygen and preparation method and application thereof
  • Compound of barium, bismuth, boron and oxygen, optical crystal of compound of barium, bismuth, boron and oxygen and preparation method and application thereof
  • Compound of barium, bismuth, boron and oxygen, optical crystal of compound of barium, bismuth, boron and oxygen and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Synthetic barium bismuth boron oxide (BaBiOBO 3 ) compounds:

[0036] The barium bismuth boron oxide compound is synthesized by solid state reaction method, and its chemical formula is: 2BaCO 3 +Bi 2 o 3 +2H 3 BO 3 →2BaBiOBO 3 +2CO 2 ↑+3H 2 O↑;

[0037] BaCO 3 、 Bi 2 o 3 and H 3 BO 3 Put it into a mortar with a stoichiometric ratio of 1:1:1, mix and grind it carefully, then put it into a Φ400mm×400mm open corundum crucible, press it tightly, put it in a muffle furnace, and slowly heat up to 300°C, Constant temperature for 24 hours, take out the crucible after cooling, the sample is relatively loose at this time, then take out the sample and grind it evenly, then put it in the crucible, keep the temperature in the muffle furnace at 550°C for another 48 hours, take it out, put it in the mortar The compound barium bismuth boron oxide can be obtained by crushing and grinding in medium, and the product is subjected to X-ray analysis, and the obtained X-ray spec...

Embodiment 2

[0045] According to the reaction formula 2Ba(NO 3 ) 2 +Bi 2 o 3 +2H 3 BO 3 →2BaBiOBO 3 +4NO 2 ↑+3H 2 O↑+O 2 ↑ Synthesis of BaBiOBO 3 Compound, specific operation steps are carried out according to embodiment 1;

[0046] Preparation of BaBiOBO by pulling method 3 the crystal

[0047] The synthesized BaBiOBO 3 and cosolvent Bi 2 o 3 Put the compound at a molar ratio of 1:1 into a Φ90mm×90mm open platinum crucible, put the crucible into a crystal growth furnace, raise the temperature to 850°C, and keep the temperature for 5 hours to obtain a mixed melt containing barium, bismuth, boron oxide and flux , cooled to 620°C,

[0048] Preparation of barium bismuth boron oxide seed crystals: Slowly lower the obtained mixed melt to room temperature at a rate of 1°C / h, and spontaneously crystallize to obtain barium bismuth boron oxide seed crystals;

[0049] Put the crucible containing the mixed melt into the crystal growth furnace at a temperature of 850°C, fix the obtaine...

Embodiment 3

[0053] According to the reaction formula 2BaCO 3 +Bi 2 o 3 +B 2 o 3 →2BaBiOBO 3 +2CO 2 ↑ Synthesis of BaBiOBO 3 Compound, specific operation steps are carried out according to embodiment 1;

[0054] Preparation of BaBiOBO by Kyropoulos method 3 the crystal

[0055] The synthesized BaBiOBO 3 Compound and cosolvent Bi 2 o 3 -H 3 BO 3 Put it into an open platinum crucible of Φ80mm×80mm at a molar ratio of 1:1:2, put the crucible into a crystal growth furnace, raise the temperature to 880°C, and keep the temperature for 15 hours to obtain a mixed molten metal containing barium, bismuth, boron oxide and flux. liquid;

[0056] Preparation of barium bismuth boron oxide seed crystals: Slowly lower the obtained mixed melt to room temperature at a rate of 8°C / h, and spontaneously crystallize to obtain barium bismuth boron oxide seed crystals;

[0057] Put the crucible containing the mixed melt into the crystal growth furnace at a temperature of 880°C, fix the obtained see...

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Abstract

The invention relates to a compound of barium, bismuth, boron and oxygen, an optical crystal of the compound of barium, bismuth, boron and oxygen and a preparation method and application thereof. The chemical formula of the compound of barium, bismuth, boron and oxygen is BaBiOBO3, and the molecular weight is 421.13. The chemical formula of the optical crystal of the compound of barium, bismuth, boron and oxygen is BaBiOBO3, wherein the crystal belongs to an orthorhombic system, a space group Pnma, cell parameters are that a=8.5556(8)A, b=5.1569(5)A, c=9.6677(7)A and v=426.54(7)A3, the molecular weight is 421.13, the birefringence of the optical crystal with the wavelength of 1046 nm is delta n=0.15, and the light transmitting wave band is in a range from 330 nm to 3000 nm. The compound of barium, bismuth, boron and oxygen is synthesized through a solid reaction process. The optical crystal of the compound of barium, bismuth, boron and oxygen develops through a high-temperature solution method and is moderate in mechanical hardness, easy to cut, polish, process and store, insoluble in water, free of deliquescence, stable in the air and suitable for manufacture of photo-communication elements and various-purpose polarizing prisms which utilize the feature of refractive index of the crystal, especially large birefringence.

Description

technical field [0001] The present invention relates to chemical formula BaBiOBO 3 Compounds and BaBiOBO 3 An optical crystal, a preparation method of the crystal and an optical device made by using the crystal. Background technique [0002] Birefringence is one of the important properties of light propagating in optically inhomogeneous dielectric crystals. 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 propagation speeds and different refractive indices are called birefringence, and such crystals are called birefringent crystals. One of the two beams obeys the general law of refraction, called ordinary light (o light), and its refra...

Claims

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Application Information

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IPC IPC(8): C30B29/22C30B9/04C01B35/12
Inventor 潘世烈董孝宇
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI