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Rare earth alkaline earth borate and preparation method and application

A borate and alkaline earth technology, applied in chemical instruments and methods, self-solidification method, self-melt liquid pulling method, etc., can solve the problems of expensive, volatile, and difficult TGG crystal raw materials for TGG crystals, and achieve a high price. The effect of low cost, simple synthesis, important economic and scientific research value

Inactive Publication Date: 2016-11-23
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

[0003] At present, there are two main commercial magneto-optical materials: the first is yttrium iron garnet (YIG), which can only be used in the infrared band, but not in the visible band; the second is terbium gallium garnet (TGG), Its Verdet constant at 633nm is -134rad / m.T, but the transmission is 70%, and in the growth process of TGG, gallium oxide (Ga 2 o 3 ) is volatile, causing the melting point and composition of TGG crystals to deviate easily, so it is difficult to obtain high-quality TGG crystals
In addition, the raw material of TGG crystal is very expensive, which also leads to its high cost

Method used

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  • Rare earth alkaline earth borate and preparation method and application
  • Rare earth alkaline earth borate and preparation method and application
  • Rare earth alkaline earth borate and preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Synthesis of lithium strontium terbium borate (LiSrTb 2 (BO 3 ) 3 )Polycrystalline

[0047] Raw materials used (analytically pure): Tb 4 o 7 0.005mol, H 3 BO 3 0.03mol, SrCO 3 0.01mol, Li 2 CO 3 0.005mol.

[0048] The specific steps are as follows: after the above-mentioned raw materials are weighed, they are put into a mortar for mixing and grinding, then packed into a platinum crucible with a diameter of 10 mm × 10 mm, heated to 800° C., and repeatedly ground to obtain the lithium strontium terbium borate polycrystalline compound of the present invention ( LiSrTb 2 (BO3) 3 ).

Embodiment 2

[0050] Synthesis of lithium strontium europium borate (LiSrEu 2 (BO 3 ) 3 )Polycrystalline

[0051] Raw materials used (analytically pure): Eu 2 o 3 0.01mol, B 2 o 3 0.015mol, Sr(NO 3 ) 2 0.01mol, LiCl0.01mol.

[0052] The specific steps are as follows: after the above-mentioned raw materials are weighed, they are put into a mortar for mixing and grinding, then packed into a platinum crucible of φ10mm×10mm, heated to 800° C., and repeatedly ground to obtain the lithium strontium europium borate polycrystalline compound of the present invention ( LiSrEu 2 (BO3) 3 ).

Embodiment 3

[0054] Synthesis of lithium barium neodymium borate (LiBaNd) by high-temperature solid-state method 2 (BO 3 ) 3 )Polycrystalline

[0055] Raw materials used (analytically pure): Nd 2 o 3 0.02mol, H 3 BO 3 0.06mol, Ba(OH) 2 0.02mol, LiOH 0.02mol.

[0056] The specific steps are as follows: after the above-mentioned raw materials are weighed, put into a mortar and mix and grind, then pack into a platinum crucible of φ10mm×10mm, heat to 800° C., and grind repeatedly to obtain the polycrystalline lithium borate barium neodymium compound of the present invention ( LiBaNd 2 (BO3) 3 ).

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Abstract

The invention discloses a rare earth alkaline earth borate, and the chemical formula of the rare earth alkaline earth borate is LiMRe 2 (BO 3 ) 3 , wherein M represents an alkaline earth element, the alkaline earth element is Sr or Ba, Re represents a rare earth element, and the rare earth element is selected from Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu One or more of them, the single crystal belongs to the trigonal crystal system. The invention also discloses a preparation method. The prepared rare earth alkaline earth borate crystal is stable in the air, not easy to deliquescence, and insoluble in water; the rare earth alkaline earth borate has important applications in the fields of optics and communication, such as magneto-optical isolation The device can be used to produce the Faraday magneto-optic effect and produce fluorescence as a phosphor matrix.

Description

technical field [0001] The invention belongs to the technical field of magneto-optic crystal preparation, and in particular, the invention relates to a rare earth alkaline earth borate and its preparation method and application. Background technique [0002] Since the 1960s, magneto-optical materials have become the research object of scientists all over the world due to their excellent magneto-optic effect, and are widely used as magneto-optic modulators, magneto-optic sensors, magneto-optic isolators and magneto-optic switches. etc., is an extremely important and widely used material. [0003] At present, there are two main commercial magneto-optical materials: the first is yttrium iron garnet (YIG), which can only be used in the infrared band, but not in the visible band; the second is terbium gallium garnet (TGG), Its Verdet constant at 633nm is -134rad / m.T, but the transmission is 70%, and in the growth process of TGG, gallium oxide (Ga 2 o 3 ) is volatile, causing t...

Claims

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Application Information

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IPC IPC(8): C30B29/22C30B28/02C30B15/00C30B11/00
Inventor 李如康陈鹏允夏明军
Owner TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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