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Monoclinic phase tantalum terbium niobate magneto-optical crystal as well as preparation method and application thereof

A technology of magneto-optical crystal and tantalum niobate, which is applied in the field of monoclinic tantalum terbium niobate magneto-optical crystal and its preparation, can solve the problem that the magneto-optical property research of tantalum terbium niobate crystal has not yet been reported, etc. Large-scale mass production, good mechanical properties, high stability

Inactive Publication Date: 2020-01-17
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, terbium vanadate crystal has been reported as a magneto-optical material with excellent performance (Optical Materials, 2015,47:543-547), but there is no report on the magneto-optic properties of terbium orthotantalum niobate crystal

Method used

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  • Monoclinic phase tantalum terbium niobate magneto-optical crystal as well as preparation method and application thereof
  • Monoclinic phase tantalum terbium niobate magneto-optical crystal as well as preparation method and application thereof
  • Monoclinic phase tantalum terbium niobate magneto-optical crystal as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A monoclinic tantalum niobate terbium magneto-optic crystal, the chemical formula of which is TbTaO4 , the preparation method of the magneto-optic crystal is as follows:

[0036] (1) Accurately weigh 1 part of Tb in molar parts 4 o 7 and 1 Ta 2 o 5 High-purity raw materials and mixed evenly. Press the block material under the pressure of 30MPa, place the block material in the muffle furnace and raise the temperature to 1500°C, then keep the temperature for 48 hours, and carry out high-temperature solid-state reaction to obtain the chemical formula TbTa 0.5 Nb 0.5 o 4 The polycrystalline raw material; Its reaction equation is as follows:

[0037] 0.5Tb 4 o 7 +Ta 2 o 5 →2TbTaO 4 +0.25O 2

[0038] (2) Put the sintered polycrystalline raw material into a Φ60mm×45mm iridium crucible, then place it in a pulling furnace, evacuate it and pour it into a protective gas, and heat the polycrystalline raw material by resistance or intermediate frequency / high frequency i...

Embodiment 2

[0040] A monoclinic phase tantalum niobate terbium magneto-optic crystal, the chemical formula of the magneto-optic crystal is TbTa 0.5 Nb 0.5 o 4 , the preparation method of the magneto-optic crystal is as follows:

[0041] (1) Accurately weigh 1 part of Tb in molar parts 4 o 7 , 0.5 Ta 2 o 5 and 0.5 parts Nb 2 o 5 High-purity raw materials and mixed evenly. Press the block material under the pressure of 30MPa, place the block material in the muffle furnace and raise the temperature to 1500°C, then keep the temperature for 48 hours, and carry out high-temperature solid-state reaction to obtain the chemical formula TbTa 0.5 Nb 0.5 o 4 The polycrystalline raw material; Its reaction equation is as follows:

[0042] 0.5Tb 4 o 7 +0.5Ta 2 o 5 +0.5Nb 2 o 5 →2TbTa 0.5 Nb 0.5 o 4 +0.25O 2

[0043] (2) Put the sintered polycrystalline raw material into a Φ60mm×45mm iridium crucible, then place it in a pulling furnace, evacuate it and pour it into a protective gas,...

Embodiment 3

[0045] A monoclinic tantalum niobate terbium magneto-optic crystal, the chemical formula of which is TbNbO 4 , the preparation method of the magneto-optic crystal is as follows:

[0046] (1) Accurately weigh 1 part of Tb in molar parts 4 o 7 and 1 Nb 2 o 5 High-purity raw materials and mixed evenly. Press the block material under the pressure of 30MPa, put the block material in the muffle furnace and raise the temperature to 1500°C, then keep the temperature for 48 hours, and carry out high-temperature solid-state reaction to obtain the chemical formula TbNbO 4 The polycrystalline raw material; Its reaction equation is as follows:

[0047] 0.5Tb 4 o 7 +Nb 2 o 5 →2TbNbO 4 +0.25O 2

[0048] (2) Put the sintered polycrystalline raw material into an iridium crucible of Φ60mm×45mm, then place it in a pulling furnace, heat up and melt, and after the melting is completed, control the temperature at a constant temperature near the melting point for 2 hours to fully mix the...

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Abstract

The invention provides a monoclinic phase terbium tantalate niobate magneto-optical crystal and a preparation method and application thereof, and relates to the field of magneto-optical crystals and devices, the chemical formula of the monoclinic phase terbium tantalate niobate magneto-optical crystal is TbTaxNb1-xO4, and x is greater than or equal to 0 and less than or equal to 1. The magneto-optical crystal has a monoclinic symmetrical structure, the melt components are consistent and co-melted, high-quality single crystals can be grown by adopting a Czochralski method crystal growth method,the growth process is simple, the period is short, and large-scale and low-cost batch production can be realized. The magneto-optical crystal has relatively high transmittance (500-1600nm) in a visible region and a near-infrared region; and the crystals have the advantages of high magnetic rare earth ion content, large electron exchange effect, favorable magneto-optical property and the like, andcan be used for manufacturing visible and near-infrared magneto-optical devices, such as magneto-optical isolators, magneto-optical modulators, magneto-optical sensors, magneto-optical switches and the like.

Description

technical field [0001] The invention relates to the technical field of magneto-optic crystals and devices, in particular to a magneto-optic crystal of monoclinic phase terbium tantalum niobate and its preparation method and application. Background technique [0002] When a beam of light is injected into a material with an inherent magnetic moment or reflected at a material interface, its propagation characteristics (polarization plane, phase or scattering characteristics) will change. This phenomenon is called the magneto-optical effect, which can produce magneto-optical effects. Photoelectric information functional crystals are called magneto-optic crystals. The Faraday rotation optical effect is a kind of magneto-optical effect, that is, when linearly polarized light (see the polarization of light) propagates in a magneto-optic crystal, if a strong magnetic field is applied parallel to the direction of light propagation, the direction of light vibration will occur deflect...

Claims

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Application Information

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IPC IPC(8): C30B29/30C30B15/20G02F1/09
CPCC30B15/20C30B29/30G02F1/093
Inventor 丁守军黄仙山唐绪兵任浩葛瑞
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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