Method for hydrothermal growth of hydrated di-strontium-11-borate single crystal

A growth method, boric acid technology, applied in the direction of single crystal growth, single crystal growth, crystal growth, etc., can solve the problem of no artificial synthesis of hydrated distrontium undecaborate crystals, no reports of research and application of crystal growth methods, etc. Problems, to achieve the effect of not easy dehydration, easy operating conditions, and the realization of operating conditions

Inactive Publication Date: 2010-07-14
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] So far, there has been no report on the artificial synthesis of hydrated distrontium undecaborate crystal, nor has there been any report on the research and application of this crystal growth method

Method used

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  • Method for hydrothermal growth of hydrated di-strontium-11-borate single crystal
  • Method for hydrothermal growth of hydrated di-strontium-11-borate single crystal
  • Method for hydrothermal growth of hydrated di-strontium-11-borate single crystal

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] In this embodiment, strontium salt (strontium carbonate) and boron-containing compound (boric acid) are selected as raw materials, and water is used as a solvent to form a hydrated distrontium undecaborate single crystal through dissolution, hydration and crystallization of raw materials in a hydrothermal medium; Proceed as follows:

[0044] Weigh 1.200 grams of strontium carbonate and 3.016 grams of boric acid (Sr, B atomic molar ratio 1: 6), mix and pack into an autoclave with a volume of Φ40mm×90mm, and add a concentration of 1.0mol / L HCl solution;

[0045] After sealing, put the autoclave into a constant temperature drying oven, raise the temperature to 210°C, and then maintain a constant temperature of 210°C±1°C for five days. Close the constant temperature drying oven, and after the furnace temperature drops to room temperature, take out the autoclave from the constant temperature drying oven, open the autoclave, wash, filter, and dry to obtain a colorless and t...

Embodiment 2

[0049] Weigh 2.000 grams of strontium carbonate and 2.358 grams of boron oxide (Sr, B atomic molar ratio 1:5), mix and put into an autoclave with a volume of Φ40mm×90mm, and add a concentration of 1.5 to a filling degree of 65% of the autoclave volume. mol / L of H 3 BO 3 solution; after sealing, put the autoclave into a constant temperature drying oven, raise the temperature to 230°C, and then maintain a constant temperature of 230°C±1°C for seven days; close the constant temperature drying oven, and take out the autoclave from the constant temperature drying oven after the furnace temperature drops to room temperature , open the autoclave, wash, filter, and dry to obtain a colorless and transparent single crystal with a size of 3.1mm×1.1mm×0.9mm.

[0050] The X-ray diffraction pattern test of the obtained crystal is consistent with the powder diffraction file database card (JCPDS card) of the natural hydrated distrontium undecaborate single crystal, and it is proved to be the...

Embodiment 3

[0052] Weigh 3.000 grams of strontium chloride and 2.635 grams of boron oxide (Sr, B atomic molar ratio 1:4), mix them, put them into an autoclave with a volume of Φ40mm×90mm, and add them according to the filling degree of 50% of the autoclave volume. Ionized water; after sealing, put the autoclave into a constant temperature drying oven, raise the temperature to 270°C, and then maintain a constant temperature of 270°C±1°C for ten days. Close the constant temperature drying oven, take out the autoclave from the constant temperature drying oven after the furnace temperature drops to room temperature, open the autoclave, wash, filter, and dry to obtain a colorless and transparent single crystal with a size of 2.7mm×1.2mm×0.7mm.

[0053] The X-ray diffraction pattern of the obtained crystal is consistent with the powder diffraction file database card (JCPDS card) of the natural hydrated distrontium undecaborate single crystal, which proves to be the hydrated distrontium undecabor...

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Abstract

The invention relates to a method for hydrothermal growth of a hydrated di-strontium-11-borate single crystal, which comprises selecting strontium salt and a boron-containing compound as raw materials, taking mineralizer solution or pure water as a dissolving medium, and preparing the hydrated di-strontium-11-borate single crystal through dissolution, hydration and crystallization of the strontium salt and the boron-containing compound in the hydrothermal medium. The specific steps are as follows: mixing the strontium salt and the boron-containing compound with the molar ratio of strontium and boron being 1:4-1:12, adding the mixture into a high-pressure reactor, and adding aqueous solution with 0-2.0mol / L of mineralizer with the filling degree of the high-pressure reactor being 50-80 percent; sealing the high-pressure reactor, placing the high-pressure reactor into the constant-temperature drying box with the temperature of 200-300 DEG C to keep the high-pressure reactor at the constant temperature for 3-14 days, switching off the power supply of the constant-temperature drying box, and lowering the temperature in the constant-temperature drying box to the room temperature; and taking out the product, washing the incompletely reacted raw materials with water, and drying the product, thereby obtaining the hydrated di-strontium-11-borate single crystal. The crystal has the advantage of powder frequency-doubling effect, and can not be easily deliquesced and dehydrated. Moreover, the operating conditions can be easily realized.

Description

technical field [0001] The invention belongs to the preparation method of nonlinear optical crystal in the field of optoelectronic materials, in particular to a hydrothermal growth method for artificially synthesizing hydrated distrontium undedecaborate single crystal. Background technique [0002] With the in-depth study of nonlinear optics and the continuous development of new materials, nonlinear optical crystal materials play an extremely important role in many fields such as solid-state laser technology, infrared technology, image processing, optical signal processing, and optical computing. potential applications. It is precisely because nonlinear optical crystals have such broad application prospects and these applications may bring major breakthroughs in the field of optoelectronics technology that finding new types of nonlinear optical crystals with excellent performance has become a hot spot in the research of functional materials. Borate crystals are the most wid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/22C30B7/10G02F1/355
Inventor 李如康王文芮孜
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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