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Preparation method of bismuth-containing paramagnetic Faraday optical rotation glass

A Faraday optical rotation and paramagnetic technology, which is applied in the field of preparation of paramagnetic Faraday optical glass, can solve the problems of low melting temperature, high content of rare earth oxides and high Verdet constant, and achieves low melting temperature and rare earth oxides. The effect of high content and large Feld's constant

Inactive Publication Date: 2012-08-08
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] (3) An important index to evaluate the performance of Faraday magneto-optical glass is the quality factor M 1 , but currently does not provide an effective selection criterion for different uses of magneto-optical glass;
However, the research and application of paramagnetic magneto-optical glass with high rare earth oxide content, low melting temperature, high Verdet constant and obvious magneto-optic effect have not been reported.

Method used

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  • Preparation method of bismuth-containing paramagnetic Faraday optical rotation glass
  • Preparation method of bismuth-containing paramagnetic Faraday optical rotation glass
  • Preparation method of bismuth-containing paramagnetic Faraday optical rotation glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: 1) First, 28 mol% of Er was 2 O 3 , 16 mol% Bi 2 O 3 , 17mol% B 2 O 3 , 35mol% Al 2 O 3 , 3mol% SiO 2 , 0.5 mol% Sb 2 O 3 and 0.5mol% ZrO 2 After mixing evenly, the batch material is formed;

[0024] 2) Then, add the prepared batches into a corundum crucible at 1200°C in two times. After adding the lid, the temperature is raised to 1300°C within 10 minutes. Continue to keep warm for 1h;

[0025]3) Finally, pour the molten glass into a graphite mold at 500°C, cool it and put it into a furnace at 550°C, keep it for 3 hours, and cool it to room temperature at a cooling rate of 1°C / min to obtain a paramagnetic material containing bismuth. Faraday Optical Glass.

[0026] The Verdet constant of the sample tested by the WFC Faraday effect tester is -0.21min / Oe.cm, and the transmittance curve of the sample tested by the spectrophotometer is as follows figure 1 As shown, the linear expansion curve of the test sample by NETZSCH DIL 402PC is as follows f...

Embodiment 2

[0029] Example 2: 1) First, according to the mole fraction, 32 mol% of Er was 2 O 3 , 15mol% Bi 2 O 3 , 18mol% B 2 O 3 , 32mol% Al 2 O 3 , 2mol% SiO 2 , 0.5 mol% Sb 2 O 3 and 0.5mol% ZrO 2 After mixing evenly, the batch material is formed;

[0030] 2) Then, add the prepared batches into a corundum crucible at 1200°C in two times. After adding the lid, the temperature is raised to 1350°C within 10 minutes. Continue to keep warm for 1h;

[0031] 3) Finally, pour the molten glass into a graphite mold at 500°C, cool it and put it into a furnace at 550°C, keep it for 3 hours, and cool it to room temperature at a cooling rate of 1°C / min to obtain a paramagnetic material containing bismuth. Faraday Optical Glass.

[0032] The Verdet constant of the sample tested by the WFC Faraday effect tester was -0.24min / Oe.cm.

[0033] see attached image 3 , is the transmittance curve of the prepared bismuth-containing paramagnetic Faraday rotatory glass in the visible light range...

Embodiment 3

[0035] Example 3: 1) First, according to the mole fraction, 17 mol% of Er was 2 O 3 , 15mol% Bi 2 O 3 , 30mol% B 2 O 3 , 36mol% Al 2 O 3 and 2mol% SiO 2 After mixing evenly, the batch material is formed;

[0036] 2) Then, add the prepared batches into a corundum crucible at 1100°C in two times. After adding the lid, the temperature is raised to 1200°C within 10 minutes. Continue to keep warm for 1h;

[0037] 3) Finally, pour the molten glass into a graphite mold at 500°C, cool it and put it into a furnace at 550°C, keep it for 3 hours, and cool it to room temperature at a cooling rate of 1°C / min to obtain a paramagnetic material containing bismuth. Faraday Optical Glass.

[0038] The Verdet constant of the sample tested by the WFC Faraday effect tester was -0.13min / Oe.cm.

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Abstract

The invention discloses a preparation method of bismuth-containing paramagnetic Faraday optical rotation glass. The preparation method comprises the following steps of: firstly, uniformly mixing Er2O3, Bi2O3, B2O3, Al2O3, SiO2, Sb2O3 and ZrO2 to obtain a batch; secondly, fusing the batch to obtain molten glass, dropping the molten glass into a graphite mould, thermally insulating at 550 DEG C for 3 hours, and cooling to room temperature to obtain the bismuth-containing paramagnetic Faraday optical rotation glass. According to the invention, the bismuth-containing paramagnetic Faraday optical rotation glass is prepared by adopting a fusing and pouring method, owing to bismuth oxide with large molecular weight and low melting point, a forming range of the glass is expanded and the fusing temperature is reduced. The prepared Faraday magneto-optical glass has high content of rare earth erbium oxide, excellent glass forming property, remarkable Faraday effect and large Verdet constant, and the test sample has high light transmittance in a visible light range, and excellent heat stability and chemical stability. The preparation process has the advantages of simple operation process, low founding temperature, small high-temperature viscosity in the glass fusing process, short fusing time, excellent forming property, low cost, energy conservation and environmental friendliness and is suitable for industrial production.

Description

technical field [0001] The invention relates to a preparation method of a paramagnetic magnetic optical rotatory glass, in particular to a preparation method of a paramagnetic Faraday optical rotatory glass containing bismuth. Background technique [0002] In 1830, the British physicist Faraday discovered the magneto-optical effect, but until the end of the 1960s, the research on the Faraday effect was still mainly focused on the exploration of basic theories and the accumulation of experimental data. In recent decades, with the increasing application of laser and optoelectronic technology in emerging high-tech fields, various magneto-optical devices based on the principle of magneto-optical effect have also shown their unique properties and broad application prospects. Like rare-earth functional materials such as permanent magnets, luminescence, and lasers, magneto-optical materials have attracted widespread attention from academia, industry, and military, and have develope...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C4/00C03C3/068C03C3/15C03C3/155
Inventor 郭宏伟殷海荣董继先刘盼刘新年李启甲王顺逆李忠利
Owner SHAANXI UNIV OF SCI & TECH
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