Preparation method of bismuth-containing paramagnetic Faraday optical rotation glass

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 paramagnetic magnetic optically active glass, in particular to a preparation method of bismuth-containing paramagnetic Faraday optically active glass. Background technique [0002] In 1830, the British physicist Faraday (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, as laser and optoelectronic technologies have been widely used in emerging high-tech fields, various magneto-optical devices based on the principle of magneto-optic effect have also shown their unique performance and broad application prospects. Magneto-optical materials, like rare earth functional materials such as permanent magnets, luminescence, and lasers, have attracted widespread attention from academia, industry, and military circles, and have de...

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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.

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