Homium oxide magneto-optical transparent ceramics with high Verdet constant and high optical quality prepared by a uniform nickel ion doping technique

A technology of uniform doping and optical quality, applied in the field of preparation of rare earth oxide magneto-optical transparent ceramics, can solve the problems of unfavorable magneto-optical performance, improvement, limited capacity, etc. Effect

Active Publication Date: 2022-02-01
SHENZHEN LOTUT INNOVATION DESIGN CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Previous studies have shown that doping Pr in terbium gallium garnet and terbium aluminum garnet ceramics 3+ 、Ti 3+ 、Ho 3+ 、Ce 3+ Plasma is conducive to the improvement of the Verdet constant (Opt.Mater.Express, 2014, 4, 2127-2132; Opt Mater., 2018, 84, 330-334; Opt Mater Express, 2016, 6, 91-196; Scripta Mater. ., 2018, 150, 160-163), but the corresponding oxides of these ions are all paramagnetic substances, which have limited ability to increase the Verdet constant, and because the rare earth ions themselves have 4f electrons, they will cause greater optical absorption, Not conducive to the improvement of the overall magneto-optical performance

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  • Homium oxide magneto-optical transparent ceramics with high Verdet constant and high optical quality prepared by a uniform nickel ion doping technique
  • Homium oxide magneto-optical transparent ceramics with high Verdet constant and high optical quality prepared by a uniform nickel ion doping technique
  • Homium oxide magneto-optical transparent ceramics with high Verdet constant and high optical quality prepared by a uniform nickel ion doping technique

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Effect test

Embodiment 1

[0037] A technique for uniformly doping nickel ions to prepare holmium oxide magneto-optical transparent ceramics with high Feld constant and high optical quality, comprising the following steps:

[0038] Step 1: Prepare a holmium nitrate solution with a concentration of 0.2mol / L, then add nickel chloride hexahydrate solid into the holmium nitrate solution to dissolve and stir evenly, wherein the doping amount of nickel ions is controlled to a molar ratio of 2.0%; commercially available Sodium hydroxide solid was dissolved in distilled water to obtain a sodium hydroxide solution with a concentration of 1.0 mol / L.

[0039] Step 2: Add 1.0 mol / L sodium hydroxide dropwise to the mixed solution of nickel chloride and holmium nitrate at a temperature of 2°C to obtain a light green precipitated precursor, and control the pH of the titration end point to 7.8. Continue to age for 0.5h after the titration, and the product is washed by centrifugation to remove soluble impurities;

[00...

Embodiment 2

[0044] This embodiment proposes a uniform nickel ion doping technique to prepare holmium oxide magneto-optical transparent ceramics with high Verdet constant and high optical quality, which includes the following steps:

[0045] Step 1: Prepare a holmium nitrate solution with a concentration of 0.075mol / L, then add nickel chloride hexahydrate solid into the holmium nitrate solution to dissolve and stir evenly, wherein the doping amount of nickel ions is controlled at a molar ratio of 1.0%; commercially available Sodium hydroxide solid was dissolved in distilled water to obtain a sodium hydroxide solution with a concentration of 0.5 mol / L.

[0046] Step 2: At a temperature of 3°C, 0.5 mol / L sodium hydroxide was added dropwise to the mixed solution of nickel chloride and holmium nitrate to obtain a light green precipitated precursor, and the pH of the titration end point was controlled to be 8.6. Continue aging for 1.5h after the titration, and the product is washed by centrifug...

Embodiment 3

[0051] This embodiment proposes a uniform nickel ion doping technique to prepare holmium oxide magneto-optical transparent ceramics with high Verdet constant and high optical quality, which includes the following steps:

[0052] Step 1: Prepare a holmium nitrate solution with a concentration of 0.06mol / L, then add nickel chloride hexahydrate solid into the holmium nitrate solution to dissolve and stir evenly, wherein the doping amount of nickel ions is controlled to a molar ratio of 0.5%; commercially available Sodium hydroxide solid was dissolved in distilled water to obtain a sodium hydroxide solution with a concentration of 0.2 mol / L.

[0053] Step 2: At a temperature of 10°C, 0.2 mol / L sodium hydroxide was added dropwise to the mixed solution of nickel chloride and holmium nitrate to obtain a light green precipitated precursor, and the pH of the titration end point was controlled to be 8.2. Continue to age for 6 hours after the titration, and the product is washed by centr...

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Abstract

The invention relates to a technique for uniformly doping nickel ions to prepare high-performance holmium oxide magneto-optical transparent ceramics. First prepare a mixed solution of holmium nitrate and nickel chloride and stir evenly; add sodium hydroxide solution dropwise to the mixed solution to obtain a light green precipitate, continue to stir and age, then filter and wash to obtain a nickel-doped holmium oxide precursor . Then the precursor is added to the ammonium sulfate solution to react, and the obtained derivatives are washed, dried, ground and sieved, and then calcined at a high temperature to obtain nickel-doped holmium oxide ultrafine powder; the powder is formed, high-temperature sintered and After machining, nickel-doped holmium oxide magneto-optical transparent ceramics are obtained. The advantages are: the distribution of nickel in the product generated by the direct precipitation route of sodium hydroxide is uniform, and the calcined product has high sintering activity, especially the use of antiferromagnetic nickel oxide for doping not only obtains high optical quality Holmium oxide ceramics, and increase the Verdet constant of ceramics.

Description

technical field [0001] The invention belongs to the technical field of preparing rare earth oxide magneto-optical transparent ceramics, in particular to the preparation of holmium oxide magneto-optical transparent ceramics with high Verdet constant and high optical quality through a nickel ion uniform doping technology. Background technique [0002] Magneto-optical materials refer to optical information functional materials with magneto-optical effects in the ultraviolet to infrared band. Rare earth magneto-optical materials are a new type of optical information functional materials. Optical devices with various functions can be made by using the magneto-optical properties of such materials and the interaction and conversion of light, electricity and magnetism. For example, modulators, amplitude separators, magneto-optical switches, magneto-optical sensors, etc. Magneto-optical materials can be divided into magneto-optic crystals, magneto-optic glasses, and magneto-optic ce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/50C04B35/622C04B35/63
CPCC04B35/50C04B35/622C04B35/6303C04B2235/3279C04B2235/5454C04B2235/602C04B2235/656C04B2235/6567C04B2235/6581C04B2235/9653C04B2235/9646
Inventor 吕滨王梦瑶陶凯王鑫源
Owner SHENZHEN LOTUT INNOVATION DESIGN CO LTD
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