Novel environment-friendly and energy-saving growth method of large-sized blocky information storage ferroelectric single crystals

An information storage, environmental protection and energy-saving technology, applied in the direction of single crystal growth, crystal growth, single crystal growth, etc., can solve problems such as the difficulty of large-scale single crystal growth, achieve cheap and easy raw materials without pollution, reduce environmental pollution, reduce CO2 and The effect of haze emissions

Inactive Publication Date: 2015-05-20
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides an environmentally friendly and energy-saving growth method for large-scale bulk information storage ferroelectric single crystals, which can grow large crystals only under mild conditions below 50°C. Solved the technical problem of difficulty in growing large-sized single crystals in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Take 400g of raw material diisopropylamine bromide, put it into a 1L ordinary glass bottle, and add 600mL of deionized water. Cover the latex cover with a 0.5cm diameter opening in the middle and put a 40cm long polytetrafluoro stirring rod; turn on the constant temperature water circulation system of the constant temperature water bath, set the temperature at 45.0°C, and maintain the heating power at 2kw; turn on the polytetrafluoroethylene Stir with a PTFE stirring rod for 2 days at a speed of 40 rpm to fully dissolve the raw materials and reach saturation. Heat the prepared Buchner funnel with a diameter of 10cm and the 1L suction filter flask to 45.0°C, hot filter the solution with undissolved raw materials, and complete within 1 minute; and quickly transfer the clear saturated hot solution obtained by filtration to Clean another glass bottle preheated to 50.0°C as the mother liquid bottle, and cover with a cap with a paraffin oil liquid seal, put a 40cm long glass ...

Embodiment 2

[0083] Take 600g of raw material diisopropylamine bromide, put it into a 2L ordinary glass bottle, and add 1L of deionized water. A latex lid with a 0.7 cm diameter hole in the middle was closed and a 45 cm long Teflon stirring rod was inserted. The constant temperature water bath adopts a 30L U-shaped bottle made of organic transparent glass, and the top adopts an aluminum alloy cover with a hole in the middle, and the hole in the middle is used to put the mother liquor bottle. Turn on the constant temperature water circulation system of the constant temperature water bath, set the temperature at 50.0°C, and maintain the heating power at 3kw; turn on the polytetrafluoroethylene stirring rod and stir for 3 days at a speed of 50 rpm to fully dissolve the raw materials to reach saturation. Heat the prepared Buchner funnel with a diameter of 10cm and the 1L suction filter flask to 50.0°C, heat filter the solution with undissolved raw materials, and perform rapid suction filtratio...

Embodiment 3

[0090] Take 300g of raw material, put it into a 1L ordinary glass bottle, and add 500mL of deionized water. Put it into a constant temperature tank, then turn on the constant temperature water circulation water bath system, set the temperature at 40.0°C, and maintain the heating power at 1.5kw. Cover with a latex cover with a hole in the middle and a PTFE stirring rod; turn on the PTFE stirring rod and stir for 1 day at a speed of 35 rpm to make the solution saturated. Preheat to 40 with ℃ A Buchner funnel with a diameter of 10cm and a 1L suction filter flask were used to quickly heat filter the solution with undissolved raw materials within 1 minute; then quickly transfer the clear saturated hot solution to a clean 1L glass bottle preheated to 40.0°C, and quickly Put it in a constant temperature tank to keep warm and cover with a lid with a paraffin oil liquid seal, and put a 40cm long glass rod with a suspension ring in the middle of the liquid seal. After 2 hours of equil...

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Abstract

The invention discloses a novel environment-friendly and energy-saving growth method of large-sized blocky information storage ferroelectric single crystals. The method comprises the following steps: heating an information storage ferroelectric single crystal raw material solution to realize the saturation equilibrium; seeding; transforming; carrying out programmed freezing growth; and performing post-treatment and heat crystal transferring. A single crystal mother liquid bottle does not need to be protected by protective gas and internal and external pressure balance can be controlled automatically in a liquid sealing way by using paraffin oil; air circulation between inside and outside is isolated by the paraffin oil and the temperature balance can be maintained precisely. According the method, the large-sized blocky information storage ferroelectric single crystals grow out indirectly; the manufacturing procedure is simple, the raw materials are simple and cheap, waste liquid is recyclable, no pollution or emission of the three wastes is caused; energy is saved since the crystals grow almost at room temperature; environmental friendliness is realized by virtue of growth in an aqueous solution; the manufacturing cost is low.

Description

technical field [0001] The invention relates to a manufacturing technology of a novel molecular ferroelectric information storage single crystal, in particular to an environment-friendly and energy-saving growth method of a novel large-size bulk information storage ferroelectric single crystal. Background technique [0002] Ferroelectric materials are an indispensable intelligent material for modern information storage, microelectronics, remote sensing, laser, etc., which are related to national economy and national defense. And because of its special dipole arrangement structure and the characteristics of integrating light, electricity, magnetism, heat and force, it has a special application prospect that cannot be replaced by any material, and can meet the special requirements of the rapid development of high integration in the future. . Currently, the number of widely used ferroelectric materials is very limited and focuses on inorganic oxides such as BaTiO 3 , PbTiO 3...

Claims

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Application Information

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IPC IPC(8): C30B7/00C30B29/22
Inventor 付大伟张毅戈加震叶恒云叶琼游雨蒙熊仁根
Owner SOUTHEAST UNIV
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